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:
May. 24, 2005
Filed:
Jul. 02, 2003
Applicants:
Ingo Pinnau, Palo Alto, CA (US);
Zhenjie He, Fremont, CA (US);
Rolande J. Blanc, San Jose, CA (US);
Inventors:
Assignee:
Membrane Technology and Research, Inc., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D053/22 ; B01D063/02 ; B01D071/06 ;
U.S. Cl.
CPC ...
Abstract
A membrane-based process for separating mixtures of target gases if the gas mixture also contains Chydrocarbon vapors. The process uses gas-separation membranes having a base membrane and a coating layer. The base membrane incorporates a selective layer made from a polymer selective between the light gases to be separated. The coating layer comprises a fluorinated polymer capable of protecting the base membrane from Chydrocarbon vapors and liquids.