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. 23, 2013
Filed:
Apr. 21, 2005
Jun'ichi Masuda, Kyoto, JP;
Masatoshi Ohkura, Otsu, JP;
Shigeru Tanaka, Yasu, JP;
Reiko Morita, Kusatsu, JP;
Hajime Fukushima, Kyoto, JP;
Jun'ichi Masuda, Kyoto, JP;
Masatoshi Ohkura, Otsu, JP;
Shigeru Tanaka, Yasu, JP;
Reiko Morita, Kusatsu, JP;
Hajime Fukushima, Kyoto, JP;
Toray Industries, Inc., , JP;
Abstract
A microporous polypropylene film where film formability is improved in accordance with a β-crystal technique which allows microporous films to be continuously manufactured at low cost is disclosed. In addition, a microporous polypropylene film of which the specific gravity is further reduced is provided. Furthermore, a microporous polypropylene film with a significantly high permeability is provided. In addition, manufacturing methods for these microporous polypropylene films are provided.