Leonard Parker Pool founded his company to meet the needs of the mid-level oxygen consumer. Although his idea to combine existing technology with a novel marketing concept was ingenious, immediate orders were not forthcoming. Frustrated but undaunted, Pool seized opportunity and instead, sold oxygen generators to support military efforts during World War II.

Leonard Parker Pool founded Air Products in 1940.

Leonard Parker Pool founds Air Products in 1940 in Detroit, Michigan, on a simple, but revolutionary, idea: the "on-site" concept of producing and selling industrial gases.

Grede foundries, Milwaukee, WI plant, 1947. An R-750 generator

Air Products leases its first oxygen gas generator to a small Detroit steel company in 1941. Pictured: Grede foundries plant, Milwaukee, Wisconsin. An R-750 generator, typical of generators sold and leased in the 1940s and 1950s.

First and Second Aircraft Repair Units

World War II diverts the company's attention to the design and manufacture of mobile generators to produce oxygen for use by the military in high-altitude flights. Pictured: 1st & 2nd aircraft repair units; two of many crews trained by Air Products in the operation and maintenance of its mobile oxygen generators.

Oxygen generators under construction at Chattanooga, TN 1954

In 1944, Air Products moves to Chattanooga, Tennessee and produces 240 oxygen generators for the armed forces and for "lend-lease" to foreign allies. Pictured: Mobile and stationary oxygen generators under construction in Chattanooga.

Emmaus, Pennsylvania, Plant 1

After the war, the company refocuses its sights on commercial markets by setting up operations near Allentown in Pennsylvania's Lehigh Valley. Pictured: Emmaus, Pennsylvania, Plant 1.

Line Drawing of Weirton tonnage plant, 1951

In 1945, Air Products secures a contract with Weirton Steel Company in West Virginia to lease three generators that produce six tons per day of oxygen. Pictured: Line drawing of Weirton tonnage plant.


In the post-war years, abundant oxygen was transforming the gas industry. Company founder Leonard Parker Pool was determined to compete in this "tonnage" gas market, and his plan proved as inventive as his on-site concept. Liquid hydrogen, a substance considered a laboratory curiosity, became an in-demand product in the later years of the decade, offering the company a new opportunity.

4, 75 ton-per-day plants at Santa Susana, CA, 1957

In support of America's emerging missile and space program, Air Products builds plants capable of producing tonnage quantities of liquid oxygen and nitrogen. Pictured: The Santa Susana Plant, featuring four 75-ton-per-day oxygen generators. It was, as Leonard Pool told his employees, "the largest single contract in [the company's] history."

Air Force liquid hydrogen tonnage plants at West Palm Beach, FL,

With the launch of Sputnik in 1957, Air Products wins the competition to make a new rocket propellant – liquid hydrogen – for the Air Force and later NASA at the legendary "three bears" plants. Pictured: Aerial view of the Air Force tonnage liquid hydrogen facility at West Palm Beach, Florida. Papa Bear is in the foreground, while Mama Bear and storage tanks are visible in the distance.

Spencer Chemical 200-ton-per-day oxygen-nitrogen plant, Vicksburg, MS, January, 1953

The marketing concept known as "piggy-backing" is introduced — building extra gas liquefaction capacity into the on-site plants. Pictured: Spencer Chemical 200-ton-per-day oxygen-nitrogen plant, Vicksburg, Mississippi, U.S.

Members of the board of directors

In 1957, Air Products enters the international market for industrial gases through Air Products (Great Britain), Ltd., a joint venture with the Butterley Company. Pictured: Members of the board of directors leaving Coombe House, New Maiden, head office of APL in the U.K.


Many of the company's offerings, including oxygen and hydrogen, are building-block chemicals. Air Products took advantage and diversified into a wide range of process intermediate chemicals. Elsewhere, engineering talent created a new opportunity in helium that led to a worldwide production and supply leadership position.

Pool with successor Ed Donley

In 1960, company founder Leonard Parker Pool is featured on the cover of Business Week. Pictured: Pool with successor Ed Donley.

Calvert City

In 1961, Air Products begins manufacturing chemicals through a joint venture to convert refinery by-products into oxo-alcohols for use in producing plasticizers. Pictured: Air Products' Calvert City, Kentucky plant, where a wide range of industrial and specialty chemicals, including water-based emulsion polymers and surfactants, are produced.

The Houdry Laboratory in Linwood, PA

In 1962, the company acquires the Houdry Process Company and its subsidiary, the Catalytic Construction Company. Pictured: The Houdry Laboratory in Linwood, Pennsylvania.

New York Stock Exchange

Air Products stock is listed on the New York Stock Exchange for the first time in 1962 as its sales pass $100 million.

Kempton Park, South Africa

In the mid-60s, the company widens its global presence with subsidiaries in Belgium, West Germany, and South Africa. Pictured: Kempton Park, South Africa.


The company's position in chemicals expands with the 1969 acquisition of Escambia Chemical Corporation, a U.S. company in Pensacola, Florida. Pictured: Pensacola, Florida.

Liberal, Kansas

Air Products develops a process for the recovery of helium from natural gas, along with the process to liquefy natural gas using a heat exchanger. Pictured: Liberal, Kansas.


Although the company's earliest success was based on oxygen supply, its nitrogen applications increased in importance. The company also further invested in chemicals, making its entry into the electronics industry.  By 1978, Air Products had become a Fortune 500 company on the strength of $1 billion in sales.


The business further expands in the '70s with the acquisition of the chemicals and plastics business of Airco, Inc. Over the next 40 years, the polymer emulsions business becomes the U.S. market leader, generating nearly $1 billion in revenues. Pictured: Airco product literature.

Cryo-Quick unit freezing McDonald's hamburger patties, 1973

Early Cryo-Quick food freezing units helped revolutionize the American restaurant industry, enabling centralized food processing to ensure consistency.  Pictured: Freezing hamburger patties for McDonald's.

Space shuttle launch

Air Products is awarded a 12-year $287 million contract from NASA to supply liquid hydrogen to the United States' new space shuttle program.

Fortune 500

The company makes the Fortune 500 listing on the strength of $1 billion in sales.


During the decade, the company further grew its global position through strategic equity positions and strengthened its chemicals and electronics businesses.  It also entered its second stage of diversification into environmental and energy markets by focusing primarily on the emerging, high-temperature technology of cogeneration, trash-to-steam, and flue-gas desulfurization, as well as building a leading refinery hydrogen supply position.

San Fu Taiwan

Air Products undertakes a strategic global expansion by taking minority positions in industrial gas companies in Korea, Japan, Malaysia, Hong Kong, China, Thailand, Taiwan, and Mexico. Pictured: Air Products San Fu in Taipei, Taiwan.


Air Products significantly expands the company's emerging epoxy curing agents business and gains a manufacturing foothold in Europe. Pictured: Epoxy manufacturing plant in Isehara, Japan.

Stearns-Roger Corporation

Air Products acquires Stearns-Roger Corporation, a U.S. leading engineering and construction services company based in Denver, Colorado. Pictured: Stearns-Roger Corporation.


In the mid-80s, the company forms an environmental and energy systems business to focus on power generation, air pollution control, and energy recovery from solid waste. Pictured: Stockton, California, U.S. cogeneration facility.

Megasys Technician

MEGASYS® Total Gas Management Services, an industry-first offering, is developed in response to customers who want more than just bulk and specialty gas. MEGASYS® services provide a deeper understanding of our customer's processes and the technology roadmap. Pictured: Air Products employee monitoring a gas cabinet at one of our MEGASYS® locations.


The company acquires the J.C. Schumacher Company, a supplier of high-purity chemicals for semiconductors, giving it a stronger foothold in electronic materials.

Hydrogen production facility in Port Arthur, Texas, U.S.

Spurred by new clean air regulations, increased use of high-sulfur crude oils, and larger demands for transportation fuels, the company forms a joint venture with KTI (now Technip) to build hydrogen processing equipment for oil refiners and becomes the leading global supplier of refinery hydrogen. Pictured: Our hydrogen production facility in Port Arthur, Texas, U.S.


Global expansion continued, as did the company's dedication to the electronics industry. Earlier development work with the U.S. government paid dividends, catapulting the company's electronics business to a worldwide leadership position.

Carburos plant, Tres Cantos (Madrid).

In the 1990s, Air Products acquires a 49 percent interest in Sapio in Italy, and completes the acquisition of Carburos Metálicos in Spain and Korea Industrial Gas. Pictured: Carburos plant, Tres Cantos (Madrid).


In Asia, the company forms joint ventures with Japanese companies Daido Hoxan and Showa Denko to serve the growing electronics industry.

Air Products Asia Employees

Air Products establishes a new company in Singapore, forms a joint venture in Indonesia, and opens new facilities at Tsukuba, Japan, to supply products to the Asia semiconductor market.


Nitrogen trifluoride—a material originally developed for laser weaponry in the 1960s—becomes the pre-eminent chamber cleaning material for the semiconductor industry. Air Products becomes the worldwide leader in production of this material. Pictured: Our nitrogen trifluoride manufacturing facility in Hometown, Pennsylvania, U.S.

Membrane fibers manufactured at our Permea facility

The company acquires Permea, Inc., a leading supplier of membrane and adsorption gas separation systems. Pictured: Membrane fibers are manufactured at our Permea facility in St. Louis, Missouri for our noncryogenic gas supply systems.


The company made additional strides toward becoming one of the world's leading integrated industrial gas companies and continues growing other business segments by leveraging existing capabilities and expertise and launching several game-changing technologies in the markeplace.

LNG Heat Exchanger

The company strengthens its worldwide leadership in natural gas liquefaction process technology by introducing a debottlenecking process that enables as much as a 60 percent capacity increase in production without sacrificing existing efficiency. Pictured: A main cryogenic heat exchanger, which is part of Air Products' AP-X® liquefaction process technology.

BIP cylinder with lab equipment

A series of game-changing gas cylinder innovations are introduced to the global marketplace.


Air Products’ industrial gas complex in New Orleans, La., is inundated with more than eight feet of water after Hurricane Katrina makes landfall. After ensuring its employees' safety, the company begins draining the facility and working to restore operations. It achieves the milestone of “substantial operations” in just over two months to help relieve a constrained liquid hydrogen market.


Air Products builds on its surface science expertise by acquiring Tomah³  Products for industrial and institutional cleaning.

Air Products Employees

Air Products becomes the leading industrial gas supplier in central Europe by acquiring the industrial gas business of BOC Gazy.

Hydrogen Fueling Station

In 2008, Air Products commissions its new hydrogen fueling station at the company’s global headquarters in Allentown, Pa. Part of the Hydrogen Education Initiative, funded largely by the Federal Transit Administration, the station enables hydrogen-powered transportation vehicles to get out into the community to help educate the public about hydrogen and its capabilities. 


Air Products people bring their deep understanding and applications expertise to the industries and markets it serves all over the world. This combination of perspective and breadth allows them to apply solutions to some of the world's most pressing energy, environmental and emerging market needs. It's this "Air Products difference" that will continue to drive profitable growth and sustainability for Air Products and its customers in the decades to come.


In China, Air Products lands its two largest ASU orders ever, the first with Shaanxi Future Energy Chemical Co., Ltd., (12,000 TPD of oxygen)  and the second with Shanxi Lu’An Mining (Group) Co., Ltd., (10,000 TPD of oxygen). The ASUs are driven by large-scale coal gasification and petroleum projects throughout China. Pictured: ASU pad for Lu’an coal gasification project in Shanxi Province, China.

Dupont Nano

Air Products acquires DuPont’s interest in DuPont Air Products NanoMaterials LLC, the two companies’ 50-50 joint venture serving the global semiconductor and wafer polishing industries.

 Indura is the largest independent industrial gas company in Latin America.

In 2012, Air Products acquires a controlling stake in INDURA, the largest independent industrial gas company in South America at the time. The acquisition brings new sales and gives the company a significant presence in a fourth region of the world.


Air Products acquires EPCO Carbon Dioxide Products, Inc. in 2013, adding liquid CO₂ to its North American offerings through EPCO’s 12 CO₂ purification and liquefaction plants. 

Seifi Ghasemi

In 2014, Air Products Board of Directors approves appointment of new Chairman, President and CEO Seifi Ghasemi , who develops a strategic Five-Point Plan to guide the company's future success. 

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In 2015, Air Products is awarded a contract by Saudi Aramco under a joint venture of Air Products and ACWA Holding to build, own and operate the world's largest industrial gas complex to supply Saudi Aramco refinery being built in Jazan, Saudi Arabia. 

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Versum logo

Executing on its strategic Five-Point Plan, Air Products completes the separation of its Electronics Materials Division through the spin-off of Versum Materials, Inc. in 2016

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Paint cans

Again executing on its strategic Five-Point Plan, Air Products becomes a pure-play industrial gases company in 2017 with the sale of its Performance Materials Division to German specialty chemicals producer Evonik Industries AG.

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Five Point Plan

CEO Seifi Ghasemi implements the next phase of the company's strategic Five-Point Plan for success. Elevating diversity and inclusion into the company's goal, the evolved Plan continues to serve as Air Products' roadmap for driving safety, inclusion, profitability and sustainability into future growth.

Pune office

Air Products establishes a state-of-the-art technology center at Dhahran Techno Valley Science Park in Saudi Arabia; an advanced research and development center at Zhangjiang Hi-Tech Park in Shanghai, China; and a world-class engineering center at Pune in Maharashtra, India. Pictured: Engineering center in Pune.  


As part of its sale-of-gas business model, Air Products builds, owns and operates a world-scale industrial gas complex in Kochi, India, for Bharat Petroleum Corporation Limited (BPCL). The new facility, which houses a technologically advanced HyCO plant,  enables BPCL to dramatically increase refining capacity for producing cleaner fuels. Also in India, Air Products' joint venture, INOX Air Products Pvt Ltd., celebrates 20 successful years of doing business in the fast-growing region.  Pictured: Air Products' industrial gas complex supplies hydrogen, nitrogen, oxygen and steam to the BPCL Kochi Refinery.

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Luan gasifiers

With world energy demands, the environment, and emerging markets always on its radar, Air Products begins engineering, building, owning and operating the world's largest industrial gas projects. Through gasification, the company supplies syngas that enables customers and countries to convert plentiful, lower value materials into higher value products. Pictured: Air Products' gasification project supplies syngas and other industrial gases to Lu'an Clean Energy in Shanxi, China.

Artist Rendering Air Products Corporate Headquarters

Air Products announces plans to build its new global headquarters just over one mile from its existing location in Pennsylvania’s Lehigh Valley. With occupancy targeted by Summer 2021, the new facility’s design will reflect a world-class, sustainable industrial gas company. Pictured: Conceptual rendering of Air Products' new global headquarters. 

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Guided by the company’s strategic Five-Point Plan and due to the hard work and commitment of its employees, Air Products achieves its goal to become the safest and most profitable industrial gas company in the world. With a keen focus on innovating solutions to the world’s most pressing energy and environmental challenges, the company plays a leading role gasification, carbon capture technologies and hydrogen for mobility. By developing, executing, owning and operating megaprojects in these areas, Air Products helps drive significant sustainability benefits for the world while supporting the continued growth and success of the company well into the future.

COVID 19 -  We Stand Together

Air Products demonstrates its culture and character as the company stands in solidarity in the world's collective fight against COVID-19. Designated by governments around the world as a "critical industry," Air Products responds to the crisis by continuing to run its facilities safely, delivering critical products to customers, and winning new projects, all while keeping health and safety its top priority. 

Indonesia Map

Air Products signs a long-term on-site contract for a world-scale coal-to-methanol production facility in Indonesia. Expected to be onstream in 2024, the project will support the national security and energy independence policies of the government of Indonesia, enabling nearly two million tons per year (TPY) of methanol to be produced from nearly six million TPY of coal.. 

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Seifi Ghasemi

Due to his strong leadership and success in delivering on commitments, the Board of Directors extends Seifi Ghasemi's term as Chairman, President and CEO through September 30, 2025.  

Dr. Samir Serhan

Dr. Samir Serhan, who played a key role in winning and executing the largest and most complex projects in the company's history, is appointed Chief Operating Officer.

Zero-emission Bus

Air Products, ACWA Power and NEOM sign an agreement for a world-scale carbon-free hydrogen-based ammonia production facility powered by renewable energy. Sited in NEOM, a new model for sustainable living located in the Kingdom of Saudi Arabia, the project will supply 650 tons per day of carbon-free hydrogen for transportation globally and save the world three million tons per year of CO₂. 

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LNG (Liquefied Natural Gas) Heat Exchanger

Company’s world-leading LNG process technology and equipment selected for Mozambique’s first onshore LNG project in South Africa; Qatargas’ massive LNG production expansion project in Ras Laffan, State of Qatar; and Sonatrach’s GL1Z LNG facility in Arzew, Algeria. All equipment, including four of the largest LNG process trains in the world, will be manufactured at Air Products’ world-class facility in Port Manatee, Florida. 

Third by '30 Carbon Emissions Reduction Goal

Aligned with the company's business strategy and higher purpose, Air Products sets a new sustainability goal to reduce its carbon dioxide emissions (CO₂) intensity (kg CO₂/MM BTU) by one-third by the  year 2030 from a 2015 baseline. Key drivers to achieving the goal include carbon capture projects; low-carbon and carbon-free projects; operational excellence; and increased use of renewable energy.

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Diversity Goals

As part of its goal to be the most diverse industrial gas company in the world, Air Products takes a measurable, transparent step to further increase the number of females and minorities in professional and managerial roles. By 2025, the company aims to achieve at least 28 percent female representation in these roles globally, and at least 20 percent minority representation in these roles in the U.S.

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