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:
Jul. 05, 1988
Filed:
Apr. 17, 1986
Applicant:
Inventors:
Manfred Eschwey, Dusseldorf, DE;
Werner Schleser, Duisburg, DE;
Assignee:
Messer. Griesheim GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 12 ; 62 555 ; 55269 ;
Abstract
Lighter volative impurities are removed from gases by drawing the gas to be purified into a vacuum system. The gas to be purified deposits onto the cold surface of a condenser which is at cryogenic temperatures, while the lighter volatile impurities are continuously pulled out of the vacuum system in gaseous form.