The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Dec. 03, 2019
L'air Liquide, Societe Anonyme Pour L'etude ET L'exploitation Des Procedes Georges Claude, Paris, FR;
Simon Crispel, Sassenage, FR;
Anh Thao Thieu, Les-Loges-en-Josas, FR;
Gaetan Coleiro, Sassenage, FR;
Fabien Durand, Sassenage, FR;
Eric Michalski, Naintre, FR;
Abstract
Device for pumping liquid hydrogen including, arranged in series between an inlet for fluid to be compressed and an outlet for compressed fluid, a first compression member with a piston forming a first compression stage and a second compression member with a piston forming a second compression stage. The first compression member compresses the liquid hydrogen to a supercritical state. The second compression member compresses the supercritical hydrogen from the first compression member to an increased pressure, in particular, between 200 and 1000 bar.