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. 18, 1992
Filed:
Nov. 24, 1989
Applicant:
Inventors:
Kiyohiko Nakae, Tokyo, JP;
Toshio Kawakita, Osaka, JP;
Takanori Kume, Osaka, JP;
Masashi Sugiyama, Osaka, JP;
Assignee:
Sumitomo Chemical Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428220 ; 428323 ; 428328 ; 4284111 ; 428457 ; 428461 ;
Abstract
An oxygen absorbing sheet is disclosed, which is obtained by molding a resin composition comprising from 15 to 70% by weight of a thermoplastic resin and from 30 to 85% by weight of an oxygen absorbent into a sheet having a thickness of from 10 .mu.m to 5 mm and stretching the sheet at least uniaxially at a stretch ratio of from 1.5 to 8.0. The oxygen absorbing sheet is easy to handle, and its oxygen absorption capacity is arbitrarily controllable.