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:
Oct. 31, 1995
Filed:
Sep. 07, 1994
Applicant:
Inventors:
Norihide Sugiyama, Yokohama, JP;
Masaru Nakamura, Tokyo, JP;
Sumihiro Moriyama, Okayama, JP;
Fumihiro Sasaki, Okayama, JP;
Assignee:
Japan Gore-Tex, Inc., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
96 13 ; 96 14 ; 55524 ;
Abstract
An oil- and water-repellent filter which contains a porous filter material that has its internal and external surfaces coated with a compound formed by combining a fluoropolymer having a fluorine-containing aliphatic cyclic structure in the main chain and a fluoropolymer containing polyfluoroalkyl groups. The coating imparts superior oil- and water-repellency without impairment to the flow of air or other gases through the filter.