Hydrogen liquefier

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12181215
APP PUB NO 20230175773A1
SERIAL NO

17542682

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Abstract

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Hydrogen is liquefied through a process utilizing refrigeration from hydrogen at one, two, or three different pressures as well as a nitrogen refrigeration cycle. One or more stages of catalyst are used to convert ortho-hydrogen to para-hydrogen as the hydrogen is cooled and liquefied. Subcooled liquid hydrogen feeds the final stage of ortho-hydrogen to para-hydrogen conversion to reduce or eliminate vaporization of the hydrogen during the exothermic ortho-hydrogen to para-hydrogen conversion.

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Patent Owner(s)

Patent OwnerAddress
AIR PRODUCTS AND CHEMICALS INC1940 AIR PRODUCTS BOULEVARD PATENT DEPT ALLENTOWN PA 18106-5500

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harris, Christopher F Zionsville, US 3 49
Higginbotham, Paul Guildford, GB 73 373
Petrik, John H Bethlehem, US 2 0

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