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:
May. 04, 1976
Filed:
May. 31, 1974
Applicant:
Inventors:
Rafail Velislavov Mostev, Sofia, BG;
Hrisanta Nicolaeva Budevska, Sofia, BG;
Latinca Tantilova Ivanova, Sofia, BG;
Assignee:
Zlehit pri Ban, Sofia, BG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; H01M / ;
U.S. Cl.
CPC ...
427 54 ; 136143 ; 20415923 ; 427 58 ; 427301 ; 427322 ; 427341 ; 427370 ; 427400 ;
Abstract
A method of obtaining alkaline battery separators. Such method comprises ultraviolet irradiation in the presence of a sensitizer and oxygen contained in the air of low density polyethylene film at ambient temperature and normal pressure to effect cross-linking and subsequently graft polymerizing an ethylenically unsaturated carboxylic acid monomer into the irradiated film under the action of heat and compression of the film.