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. 04, 2013
Filed:
Feb. 06, 2008
Masaya Ito, Hino, JP;
Hiroaki Kaneko, Hino, JP;
Yukako Fukuhira, Hino, JP;
Nobuyuki Endo, Hino, JP;
Teijin Limited, Osaka, JP;
Abstract
The invention provides a cellulose derivative having a repeating unit of the formula below, a composition including the cellulose derivative and a phospholipid, a method for production thereof, and an adhesion barrier including the cellulose derivative or the composition. In the formula, R, R, and Rare —H, —CH—COOH, —CH—COOX, or —CHCO-phosphatidylethanolamine, and X is an alkali metal or an alkali earth metal. The degree of substitution of —CH—COOH and —CH—COOX is 0.3 to 2.0 in total, and the degree of substitution of —CHCO-phosphatidylethanolamine is 0.001 to 0.05.