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:
Jan. 06, 2026
Filed:
Jun. 16, 2023
Applicant:
Evergreen Cryogenics Inc., Katy, TX (US);
Inventors:
James Zhao, Houston, TX (US);
Shukui Zhao, Katy, TX (US);
Assignee:
Evergreen Cryogenics Inc., Katy, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J 1/00 (2006.01); F25J 1/02 (2006.01);
U.S. Cl.
CPC ...
F25J 1/0208 (2013.01); F25J 1/001 (2013.01); F25J 1/0067 (2013.01); F25J 1/0072 (2013.01); F25J 2205/60 (2013.01); F25J 2205/82 (2013.01); F25J 2210/04 (2013.01); F25J 2215/04 (2013.01); F25J 2215/10 (2013.01); F25J 2220/02 (2013.01); F25J 2230/24 (2013.01); F25J 2230/30 (2013.01); F25J 2230/42 (2013.01); F25J 2240/12 (2013.01); F25J 2245/90 (2013.01); F25J 2270/14 (2013.01); F25J 2270/20 (2013.01);
Abstract
Methods and systems providing a process for cooling and liquefying a purified gaseous hydrogen feed stream to a liquid hydrogen stream that may be stored in a liquid hydrogen storage tank, as well as a system wherein ortho-hydrogen (o-H2) contained in the purified gaseous hydrogen feed stream may be converted to para-hydrogen (p-H2) through serial low-temperature catalytic converters along the cooling process from normal ambient temperature (300K) to the liquefied temperature about (20K) of the hydrogen.