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. 04, 1983
Filed:
Oct. 13, 1981
Applicant:
Inventors:
Sueo Machi, Takasaki, JP;
Isao Ishigaki, Maebashi, JP;
Takanobu Sugo, Gunma, JP;
Kazuo Murata, Takatsuki, JP;
Shiro Tanso, Takatsuki, JP;
Keizi Senoo, Takasaki, JP;
Assignees:
Japan Atomic Energy Research Institute, Tokyo, JP;
Yuasa Battery Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 35 ; 20415915 ; 427 44 ;
Abstract
A method of producing a hydrophilic membrane from a polyethylene base film by first irradiating the film with ionizing radiation in air or an oxygen atmosphere and then grafting acrylic acid and/or methacrylic acid onto the irradiated film at low temperatures.