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:
Aug. 18, 1992
Filed:
Jan. 14, 1991
Applicant:
Inventors:
Michael W Cato, Newark, CA (US);
Scott B Bassett, San Jose, CA (US);
Assignee:
Semi-gas Systems, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
422122 ; 55387 ; 55417 ; 55418 ; 55446 ; 422311 ;
Abstract
A filter-purifier that removes sub-micron particles as well as trace amounts of moisture, oxygen, and other chemical impurities from a gas stream. The filter-purifier has a pair of end caps, a baffle stack, a purifying medium bed to contain a purifying medium, a pair of face-seal style fittings, a pre-filter cup, a purifying medium retaining screen, a final filter, a pair of spring stacks, a pair of collars to retain the spring stacks, and a cylindrical housing welded between the end caps.