L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude
345Patents
21Active
345Granted
43Portfolio score
Filing activity: Feb 29, 1996 → Mar 20, 2009 · 21 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6520176B1 | Portable oxygen concentrator | Chemistry; Metallurgy | 145 | Expired |
| US7284362B2 | Integrated air separation and oxygen fired power generation system | Emerging Cross-Sectional Technologies | 126 | Expired |
| US6402813B2 | Process for purifying a gas by adsorption of the impurities on several active carbons | Emerging Cross-Sectional Technologies | 120 | Expired |
| US7143606B2 | Combined air separation natural gas liquefaction plant | Mechanical Engineering; Lighting; Heating | 103 | Expired |
| US6646564B1 | System and method for remote management of equipment operating parameters | Physics | 89 | Expired |
| US6607584B2 | Adsorbent with improved mass transfer for a VSA or PSA process | Emerging Cross-Sectional Technologies | 79 | Expired |
| US7192626B2 | Methods for producing silicon nitride films and silicon oxynitride films by thermal chemical vapor deposition | Electricity | 75 | Expired |
| US6454562B1 | Oxy-boost control in furnaces | Emerging Cross-Sectional Technologies | 72 | Expired |
| US7025801B2 | Method for controlling a unit for the treatment by pressure swing adsorption of at least one feed gas | Emerging Cross-Sectional Technologies | 68 | Expired |
| US6695686B1 | Method and device for generating a two-phase gas-particle jet, in particular containing CO2 dry ice particles | Performing Operations; Transporting | 63 | Expired |
| US6517609B1 | Installation for the cyclic treatment of fluid by adsorption with valves with improved sealing | Emerging Cross-Sectional Technologies | 62 | Expired |
| US7255727B2 | Method for treating at least one feed gas mixture by pressure swing adsorption | Emerging Cross-Sectional Technologies | 60 | Expired |
| US6508860B1 | Gas separation membrane with organosilicon-treated molecular sieve | Performing Operations; Transporting | 54 | Expired |
| US6474264B1 | Method of improving fish breeding conditions operating in ozonated water | Human Necessities | 54 | Expired |
| US7019159B2 | Hexakis(monohydrocarbylamino) disilanes and method for the preparation thereof | Chemistry; Metallurgy | 53 | Expired |
| US7497896B2 | Method of treating a gas mixture comprising propane and propylene | Chemistry; Metallurgy | 47 | Expired |
| US6387212B1 | Process for obtaining fibers integral with calcium carbonate particles | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6612113B2 | Integrated method of air separation and of energy generation and plant for the implementation of such a method | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US6550234B2 | Integrated air-separation/energy-generation process and plant for implementing such a process | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US6663805B1 | Process for making hollow fiber mixed matrix membranes | Emerging Cross-Sectional Technologies | 44 | Expired |
| US6439235B1 | Oxygen therapy equipment with a device for respiratory assistance without a nose tube | Human Necessities | 40 | Expired |
| US6402809B1 | Management of an air purification system with thermal regeneration | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6929246B2 | Expansion valve fitted with a connector that is designed for the connection of a user socket | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6475657B1 | Ceramic membrane which is in an oxide ion conductor based on yttrium-stabilized zirconia | Emerging Cross-Sectional Technologies | 37 | Expired |
| US7482286B2 | Method for forming dielectric or metallic films | Emerging Cross-Sectional Technologies | 34 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.