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:
Jun. 08, 2004
Filed:
Jul. 01, 2002
Tomonori Hosoda, Ibaraki, JP;
Hiroyuki Oba, Ibaraki, JP;
Toru Saika, Ibaraki, JP;
Katsumi Kawaguchi, Ibaraki, JP;
Kureha Chemical Industry Co., Ltd., Tokyo, JP;
Abstract
A film selectively permeable to carbon dioxide gas which includes chitosan having a degree of deacetylation of 70 mol % or higher and in which the ratio of the carbon dioxide gas transmission (CO TR) to the oxygen gas transmission (O TR), (CO TR/O TR), is 15 or higher and a food packaging film made from such a film. The films are insoluble in water, are highly safe from the standpoint of food hygiene, and have such selective gas permeability that the ratio of carbon dioxide gas transmission to oxygen gas transmission is high, which can be economically obtained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile