L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

France


 
Total IP 3,863
Total IP incl. subs 4,342 (+ 806 for subs)
Total IP Rank # 296
IP Activity Score 3.9/5.0    1,958
IP Activity Rank # 360
IP AS incl. subs 3.7/5.0    2,053
Stock Symbol
ISIN FR0000120073
Market Cap. 95.3B  (EUR)
Industry Chemicals
Sector Basic Materials
Dominant Nice Class Environmental control apparatus

Patents

Trademarks

1,262 35
234 86
2,072 71
103
 
Last Patent 2025 - Cold energy recovery device for ...
First Patent 1917 - Separation of the elements of air
Last Trademark 2025 - LABTOP
First Trademark 1964 - AL

Subsidiaries

29 subsidiaries with IP (595 patents, 211 trademarks)

30 subsidiaries without IP

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Industry (Nice Classification)

Latest Inventions, Goods, Services

2025 G/S Regulating and safety accessories for gas apparatus, namely cap and expansion valve for gas cylin...
G/S Medical gas cylinders, namely, metal containers for medical air or pressurized medical gas, part...
2024 G/S Sublimated industrial chemicals for vapor deposition of thin layers and nanoparticles. Analysis, ...
G/S Sublimated industrial chemicals for vapor deposition of thin layers and nanoparticles. Analysis,...
Invention Zinc, zinc-containing film deposition and zinc-containing alloy formation using zinc and hydrogen...
Invention Method and apparatus for separating a gas comprising co2, nitrogen and at least one toxic and/or ...
Invention Carbon dioxide for passivation of galvanized surfaces that are exposed to water during operation....
Invention Monitoring the ageing of an electrolyzer. A method for performing electrolysis with an electroly...
Invention System for determining the proportion of at least one impurity in a cryogenic liquid. The presen...
Invention Method and system for determining the content of at least one impurity in a cryogenic liquid. Th...
Invention Refrigeration device and method. The invention relates to a cryogenic refrigeration device compr...
Invention Surface treatment method. A surface treatment method. Atmospheric plasma is provided, and an obj...
Invention Piston, fluid machine comprising such a piston, and production method. The invention relates to a...
Invention Conversion of a gas feed into a hydrogen-containing effluent gas, reducing a content of nitrogen ...
Invention Process and apparatus for separating co2 from a feed stream containing co2, at least one lighter ...
Invention Receptacle for cryogenic coupling and assembly comprising such a receptacle. The invention relat...
Invention Method and plant for separating co2 by partial condensation and/or distillation and by absorption...
Invention Adsorbent with hierarchical structure. Adsorbent agglomerate having an inner region and a superp...
Invention 2. 2222 into the reaction chamber, converting the etching gas to a plasma; and allowing an etchin...
Invention 2. 2222 into the reaction chamber, converting the etching gas to a plasma, and allowing an etchin...
Invention Liquid distributor. A gravity liquid distributor a having a lower plate provided with orifices v...
Invention Nitrogen generating device and nitrogen generating method. A nitrogen generating method for prod...
Invention Device, facility and method for keeping a liquefied gas store cold. A device and a method for ke...
Invention Process for producing methanol with utilization of the waste heat from an electrolyser. A proces...
Invention Method for estimating a volume of a reservoir to be filled from a pressurized fluid distribution ...
Invention Silicon-containing group 4 precursors and deposition of metal-containing films. Disclosed are Me...
Invention Production of a hydrogen-containing synthesis gas by conversion of a hydrocarbon feedstock. Proce...
Invention Facility and method for liquefying hydrogen. The invention relates to a facility and a method for...
Invention Conical liquid intake valve. The invention relates to a conical liquid intake valve, in particula...
Invention Process for producing a hydrogen product and a nitrogen product from an ammonia feed stream. The ...
Invention Device for filling a hydrogen tank. The invention relates to a device for filling one or more pre...
Invention Cold energy recovery device for recovering cold energny from liquefied hydrogen source, and hydro...
Invention Device for venting a flammable gas and unit comprising such a device. The invention relates to a ...
G/S Steam reforming installations comprised of reforming reactors, reforming ovens, reforming tubes, ...
Invention Recovery of hydrogen from an ammonia cracking process. Process of separating hydrogen from an eff...
G/S chemical products for etching semiconductors in the semiconductor industry, namely, semiconductor...
G/S Chemical products in gaseous form and particularly air gases, chemical gases, special gases and ...
G/S Chemicals, namely, high purity gases and gas mixtures intended for use in research and analysis ...
Invention Gas detection device. [Problem] To detect, at an early stage, gas introduced into a flow path of ...
Invention Installation for producing and storing liquefied cryogenic fluid. The invention relates to an ins...
Invention Facility for producing and storing liquefied cryogenic fluid. The invention relates to a facility...
G/S Produits chimiques pour l'industrie pour le dépôt par phase vapeur de couches minces pour des app...
G/S Chemical products for use in industry for vapor deposition of thin films for energy applications.
G/S Construction and repair, in particular maintenance of gas supply, distribution, treatment and pr...
G/S Apparatus and instruments for analysis, control, signaling, measurement and display for distribut...
G/S Apparatus and instruments for analysis, control, signaling, measurement and display for distribu...
G/S Industrial chemicals, namely gases and gas mixtures for welding and flame cutting.
G/S Industrial chemicals for gas deposition of thin films and nanoparticles
G/S Industrial chemicals for gas deposition of thin films and nanoparticles.
G/S Produits chimiques pour l'industrie pour le dépôt par voie gazeuse de couches minces et de nanopa...
G/S Compressed gases for industrial use, non-combustible industrial gases for constituting protectiv...
G/S Gas injection devices [machines]; gas injection devices for water treatment [machines]; gas inje...
G/S Chemicals, namely, chloroethene, ethene, propene, butenes, butadiene, ethylene, propylene, benzen...
G/S Medical gas cylinders, Namely containers of metal for compressed medical gas, in particular Bottl...
G/S Medical gas cylinder, namely, metal container for pressurized medical gas, particularly cylinder...
2023 G/S Métaux d'apport pour le soudage; fils, électrodes et baguettes métalliques pour le soudage, la mé...
G/S Filler metals for welding; wires, electrodes and rods of metal for welding, metallizing, brazing...
G/S Chemicals, gases and gas mixtures, in liquid or gaseous form intended for use in industry partic...
G/S Compressors for gas compression; pump control valves; turbines, other than for land vehicles, nam...
G/S Compresseurs pour la compression de gaz ; vannes ; détendeurs ; turbines de détente ; séparateurs...
G/S compressors for gas compressing; Slide valves; Expansion valves; Expanders; Fluid separators; Mec...
G/S Compressors for gas compression; valves; pressure reducers [parts of machines]; expansion turbin...
G/S Installation, entretien, maintenance et réparation d'appareils, instruments et dispositifs médica...
G/S Installation, servicing, maintenance and repair of medical apparatus, instruments and devices at...
G/S Analysis, checking, signaling, measuring, and display apparatus and instruments for the distribut...
G/S Apparatus and instruments for analysis, monitoring, signaling, measuring, visualization for the ...
G/S Chemicals, gases and gas mixtures, in liquid or gaseous form intended for use in industry, parti...
Invention Cryogenic plasma etching using c2h2f2. A cryogenic etching method for forming an aperture by sel...
Invention Dielectric plasma etching using c2h2f2. An etching method for forming a structure by selectively...
Invention Biogas production with headspace vacuum. A system for producing biogas comprises a bioreactor, co...
G/S Metal gas cylinders for compressed gas Treatment of materials, particularly gas cylinders, be mea...
G/S Gases for medical use; gas mixtures for medical use; gases for medical diagnosis; gas mixtures f...
G/S Equipements de combustion pour fours de fusion pour la fabrication de verre et de métaux non ferr...
G/S Treatment of materials by means of combustion processes for smelting furnaces for the manufacture...
G/S Combustion equipment for smelting furnaces for the manufacture of glass and non-ferrous metals; ...
2022 Invention Method and apparartus to generate a hydrogen-rich product. A method for generating hydrogen is p...
Invention Inorganic silyl and polysilyl derivatives of group v elements and methods of synthesizing the sam...
Invention New inorganic silyl and polysilyl derivatives of group v elements and methods of synthesizing the...
Invention Method for treating smoke containing carbon dioxide. A process for treating a flue gas produced ...
Invention Facility for producing liquid co2 and biomethane with a means for preventing the build-up of hydr...
Invention Device and method for storing and supplying fluid. The invention relates to a device for storing...
Invention Deposition of noble metal islets or thin films for its use for electrochemical catalysts with imp...
G/S Rental of industrial and medical gas containers, supply (distribution) of industrial and medical...
Invention Coupling device, and method for flushing same. Disclosed is a self-closing emergency coupling an...
Invention Facility for cooling a gas flow containing co2 and method using such a facility. A facility for ...
G/S Combustion equipment for smelting furnaces used in the manufacture of glass and non-ferrous metal...
G/S Scientific, weighing, measuring, signaling and checking (supervision) apparatus and instruments;...
Invention Dilution refrigeration device. The invention relates to a dilution refrigeration device for obta...
G/S Services for generating gas in liquid or gaseous form Apparatus, devices and installations for pr...
G/S Appareils, dispositifs et installations pour la production de produits chimiques, y compris les a...
G/S Apparatus, devices and installations for producing chemicals, including apparatus, devices and i...
G/S Pre-recorded audio cassettes, discs and magnetic tapes; Pre-recorded video discs and cassettes; D...
G/S Industrial gases in liquid, gaseous or solid form; cryogenic fluids; nitrogen in liquid, gaseous...
Invention Modular system for delivering anaesthetic gas for stunning animals prior to slaughter. The appar...
Invention Method and device for separating air by cryogenic distillation. A method for separating air by c...
2021 Invention Tin-containing precursors for deposition of tin-containing thin films and their corresponding dep...