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:
Mar. 12, 2013
Filed:
Oct. 27, 2008
Junya Ishida, Saitama, JP;
Mitsuaki Negishi, Saitama, JP;
Yuzo Morioka, Saitama, JP;
Mika Kawakita, Obu, JP;
Katsunori Iwase, Kariya, JP;
Manabu Maeda, Nagoya, JP;
Masahiko Minemura, Annaka, JP;
Mamoru Hagiwara, Annaka, JP;
Junya Ishida, Saitama, JP;
Mitsuaki Negishi, Saitama, JP;
Yuzo Morioka, Saitama, JP;
Mika Kawakita, Obu, JP;
Katsunori Iwase, Kariya, JP;
Manabu Maeda, Nagoya, JP;
Masahiko Minemura, Annaka, JP;
Mamoru Hagiwara, Annaka, JP;
Shin-Etsu Polymer Co., Ltd., Tokyo, JP;
Denso Corporation, Aichi, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
An asymmetric membrane contains a porous layer and a dense layer adjacent thereto. The porous layer and the dense layer are formed of a polymeric material. The porous layer and/or dense layer contains a filler. The amount of the filler is 11 parts by mass or more per 100 parts by mass of the polymeric material contained in the asymmetric membrane.