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. 03, 1993
Filed:
May. 13, 1992
Applicant:
Inventors:
Ning Chen, Piscataway, NJ (US);
Chao-Fong Tien, Macungie, PA (US);
Stephanie M Patton, Bethlehem, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
55 16 ; 55 68 ; 55158 ;
Abstract
Polymeric membranes derived from aromatic polyarylates formed from nitrated dicarboxylic acid chlorides and cardo bisphenol having halo-substituents on all portions ortho to the hydroxyl groups are provided which exhibit high gas permselectivities.