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Alain Roullet
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Villejuif, FR
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Patents Grants
last 30 patents
Information
Patent Grant
Plant for packing products in containers
Patent number
4,977,723
Issue date
Dec 18, 1990
L'Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Ge...
Gerard Dubrulle
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Process and installation for cooling a powder by means of a refrige...
Patent number
4,619,113
Issue date
Oct 28, 1986
L'Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Ge...
Gerard Dubrulle
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Apparatus for providing a continuous stream of a cryogenic liquid a...
Patent number
4,546,609
Issue date
Oct 15, 1985
L'Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Ge...
Alain Roullet
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Method and device for injecting a liquefied pressurizing gas into c...
Patent number
4,485,854
Issue date
Dec 4, 1984
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Ge...
Alain Roullet
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Apparatus for cooling bulk products
Patent number
4,462,221
Issue date
Jul 31, 1984
L'Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Ge...
Alain Roullet
A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES