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:
Jul. 18, 2017
Filed:
Apr. 19, 2013
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
Shinichi Chaen, Settsu, JP;
Hideyuki Kiyotani, Settsu, JP;
Kunihiko Inui, Settsu, JP;
Taku Yamanaka, Settsu, JP;
Li Bao, Yuki, JP;
Yoshiyuki Shibuya, Settsu, JP;
Seigo Yamamoto, Settsu, JP;
Makoto Kobayashi, Yuki, JP;
Shunji Kasai, Settsu, JP;
Hitoshi Niinuma, Yuki, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A composition, a mixed powder and a material for molding have polytetrafluoroethylene as a main component. Each includes polytetrafluoroethylene that can be fibrillated, a non-hot melt processable component that is not fibrillated, and a hot melt processable component with a melting point of lower than 320° C. that is not fibrillated. The hot melt processable component is contained at equal to or more than 0.1% by weight but less than 20% by weight of a total weight. A filtering medium for an air filter includes a porous membrane made of these components, and an air permeable support. The porous membrane is manufactured, by mixing these components, extruding the mixture, rolling and drawing.