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:
Mar. 11, 1980
Filed:
Dec. 23, 1977
Applicant:
Inventors:
Shunji Ogata, Machida, JP;
Yohei Yamamoto, Tokyo, JP;
Assignees:
Japan Oxygen Co., Ltd., Tokyo, JP;
Tokyo Cryogenic Industries Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 13 ; 62 18 ; 62 30 ; 62 40 ;
Abstract
Separation of air to produce oxygen, nitrogen and other materials is done by liquefaction and rectification under low pressure to achieve a large saving of the power requirement. The cold of LNG (liquefied natural gas) is utilized for cooling feed air and compressed gas (principally nitrogen), and this gas is compressed at an extremely low temperature so as to achieve further saving of power.