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:
Feb. 23, 1982
Filed:
Sep. 26, 1980
Applicant:
Inventors:
Tsukasa Eguchi, Tokyo, JP;
Mituharu Morozumi, Yokohama, JP;
Assignees:
Asahi Glass Company Ltd., Tokyo, JP;
Kashima Kagaku, Co., Ibaraki, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B65D / ;
U.S. Cl.
CPC ...
428421 ; 215364 ; 220307 ; 220D / ; 428422 ; 428447 ; 428492 ; 428521 ;
Abstract
A rubber stopper for sealing comprises a substrate of a rubber stopper which is partially or wholly coated with a fluorine-containing elastomer comprising a graft copolymer having rubber-like elasticity and having chemical linkages of fluorine-containing polymeric segments and organopolysiloxane segments at reactive sites of said segments.