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:
Dec. 25, 2007
Filed:
Oct. 07, 2004
Min Hyo Seo, Daejeon, KR;
Bong OH Kim, Daejeon, KR;
IN Ja Choi, Daejeon, KR;
Myung Seob Shim, Seoul, KR;
Min Hyo Seo, Daejeon, KR;
Bong Oh Kim, Daejeon, KR;
In Ja Choi, Daejeon, KR;
Myung Seob Shim, Seoul, KR;
Samyang Corporation, Seoul, KR;
Abstract
The present invention relates to an amphiphilic block copolymer of a hydrophilic block and a hydrophobic block with a terminal hydroxyl group wherein the terminal hydroxyl group of the hydrophobic bock is substituted with a tocopherol or cholesterol group. It also relates to polymeric compositions capable of forming stable micelles in an aqueous solution, comprising the amphiphilic block copolymer and a polylactic acid derivative wherein one or more ends of the polylactic acid are covalently bound to at least one carboxyl group.