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:
Nov. 16, 1993
Filed:
Apr. 08, 1991
Applicant:
Inventors:
Paul K Liu, O'Hara Township, Allegheny County, PA (US);
George R Gallaher, Oakmont Borough, PA (US);
Jeffrey C Wu, Pittsburgh, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ; C23C / ; B01D / ;
U.S. Cl.
CPC ...
427249 ; 427255 ; 4272551 ; 427314 ; 4273722 ; 210490 ; 21050026 ;
Abstract
A method of producing a carbon coated ceramic membrane including passing a selected hydrocarbon vapor through a ceramic membrane and controlling ceramic membrane exposure temperature and ceramic membrane exposure time. The method produces a carbon coated ceramic membrane of reduced pore size and modified surface properties having increased chemical, thermal and hydrothermal stability over an uncoated ceramic membrane.