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:
Feb. 07, 1978
Filed:
Oct. 12, 1976
Applicant:
Inventor:
John T Higgins, Trail, CA;
Assignee:
Cominco Ltd., Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F17C / ;
U.S. Cl.
CPC ...
62 50 ; 61-05 ; 62 54 ; 222-3 ; 2221 / ;
Abstract
A process for recovering gaseous ammonia from liquefied ammonia stored in an underground cavern includes heating gaseous ammonia to a temperature below that at which decomposition occurs and feeding it into the liquefied ammonia in the cavern. The release of the heated gaseous ammonia in the liquefied ammonia causes conversion of some of the liquid into gaseous form, and gaseous ammonia so formed is withdrawn from the cavern.