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:
Sep. 17, 1991
Filed:
Oct. 29, 1990
Applicant:
Inventor:
Philip Danielson, Downers Grove, IL (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
55 17 ; 55406 ; 73 407 ; 415 90 ; 417244 ; 417250 ; 4174231 ;
Abstract
A method of separating a lighter gas from heavier gases, in which a molecular drag pump is used. A series of support pumps are connected to the exhaust port of the molecular drag pump. A gas to be separated out from a mixture of gases is introduced at an exhaust port of one of the pumps, with the lighter gas among them traveling upstream through the molecular drag pump, into a container.