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. 27, 2020
Filed:
Nov. 12, 2009
Applicants:
Yasuhiko Fukasawa, Tokyo, JP;
Kazushi Kimura, Tokyo, JP;
Inventors:
Yasuhiko Fukasawa, Tokyo, JP;
Kazushi Kimura, Tokyo, JP;
Assignee:
KOKEN, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D04H 3/16 (2006.01); D01F 6/50 (2006.01); D04H 1/4318 (2012.01); D04H 1/4309 (2012.01); D04H 1/56 (2006.01); D01D 5/00 (2006.01); D04H 1/4382 (2012.01);
U.S. Cl.
CPC ...
D01D 5/0038 (2013.01); D01F 6/50 (2013.01); D04H 1/4309 (2013.01); D04H 1/4318 (2013.01); D04H 1/4382 (2013.01); D04H 1/56 (2013.01); D04H 3/16 (2013.01); B01D 2239/0622 (2013.01); B01D 2239/0631 (2013.01); B01D 2239/0654 (2013.01); B01D 2239/10 (2013.01); B01D 2239/1233 (2013.01); Y10T 442/3707 (2015.04); Y10T 442/626 (2015.04);
Abstract
The present invention aims to provide a sheet of microfiber assembly having a high filtering performance suitable as an oil-mist filter. A sheet of microfiber assemblycomprises microfiberseach having a fiber diameter of 3,000 nm or less and is formed of a mixture of water-insoluble but alcohol-soluble acetalized polyvinyl alcohol resin and water-insoluble but alcohol-soluble fluorine resin.