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L'air Liquide

USPTO Granted Patents = 61

Trademarks = 1

Forward Citations = 592

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117 inventors (with patents filed for the assignee):

Michel Arnout (3 out of 7 patents)

Francis Bryselbout (2 out of 7 patents)

Franck Virey (2 out of 3 patents)

4. Philippe Queille (2 out of 10 patents)

5. Jean Foulard (2 out of 9 patents)

6. Jean-Luc Mizandjian (2 out of 4 patents)

7. Dominique Masurel (2 out of 2 patents)

8. Christian Barbe (2 out of 2 patents)

9. Gerard Loiseau (2 out of 4 patents)

10. Jean-Marie Friedt (2 out of 9 patents)

11. Roger Champain (2 out of 3 patents)

12. Michel Madsac (2 out of 3 patents)

13. Michel Roux (2 out of 2 patents)

14. Dominique Lampin (2 out of 2 patents)

15. Guy Bourdon (2 out of 2 patents)

Core Competencies:

Fuel Cell Electrode Depollution

Cryogenic Distillation

Gas Purification

Ultra High Purity Gases

Membrane Gas Separation

Inert Atmosphere Packaging

Welding Technology

Gas Flow Control

Oxygen Cutting

Steel Manufacturing Processes

Carburizing Process

Fluidization Treatment

61 patents: Sort by Forward Citations

1. 9406954 - Method of depollution and regeneration of a fuel cell electrode poisoned by sulfur compounds (2016-08-02),

2. 7942974 - Method of cleaning a film-forming apparatus (2011-05-17),

3. 7115174 - Method for producing and oxide layer on metallic elements (2006-10-03),

4. 6178921 - Method of improving breeding conditions in newborn pigs (2001-01-30),

5. 6178755 - Plant and process for supplying helium to a plurality of production lines (2001-01-30),

6. 6129780 - Process and device for purification of gas by adsorption with fixed (2000-10-10),

7. 6129778 - Process for supplying a consumption unit with gas at several pressures (2000-10-10),

8. 6128921 - Air distillation plant comprising a plurality of cryogenic distillation (2000-10-10),

9. 6050106 - Ultra high purity nitrogen and oxygen generator unit (2000-04-18),

10. 5983959 - Head for supplying a cryogenic liquid, transfer line and supply plant (1999-11-16),

11. 5932026 - Method of cleaning an inner wall of a mold by means of dry ice (1999-08-03),

12. 5702678 - Method for optimizing the temperature of a Claus unit (1997-12-30),

13. 5676762 - Process for distributing ultra high purity gases with minimized corrosion (1997-10-14),

14. 5478395 - Process for supplying a gas, especially of diborane and silane (1995-12-26),

15. 5447744 - Process for supplying a gas, especially of diborane and silane (1995-09-05),

L'Air Liquide is a global leader in gases, technologies and services for industry and health. The company provides customers in various sectors with innovative solutions that improve their performance, energy efficiency, and environmental sustainability. With operations in over 80 countries, L'Air Liquide offers a comprehensive range of gas, equipment, and services for the healthcare, industry, and electronics sectors. The company's commitment to research and development drives continuous innovation and allows them to address the evolving needs of their customers.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

61 Patents

#96 in Paris

#389 in France

#11,486 in the World

L'air Liquide

Forward Citations = 592

117 inventors:

Michel Arnout (3 out of 7 patents)

Francis Bryselbout (2 out of 7 patents)

Franck Virey (2 out of 3 patents)

4. Philippe Queille (2 out of 10 patents)

5. Jean Foulard (2 out of 9 patents)

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