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. 02, 2010
Filed:
Dec. 29, 2003
Bin-hong Tsai, Kaohsiung, TW;
Jui-hsiang Chen, Hsinchu, TW;
Muh-lan Chen, Taipei, TW;
Yu-hua Chen, Taichung, TW;
Mei-jung Liu, Taipei, TW;
Bin-Hong Tsai, Kaohsiung, TW;
Jui-Hsiang Chen, Hsinchu, TW;
Muh-Lan Chen, Taipei, TW;
Yu-Hua Chen, Taichung, TW;
Mei-Jung Liu, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A biodegradable copolymer with a core block comprising bioresorbable hydrophobic polyester segment and from 3 to 10 shell blocks comprising hydrophilic polyethylene glycol segment. The hydrophobic polyester segment and each of the hydrophilic polyethylene glycol segments are linked by a urethane linkage. A polymeric micelle composition containing the copolymer is also provided. The copolymer forms micelles when the concentration of the copolymer in a dispersing medium reaches or exceeds the critical micelle concentration. The micelles possess good drug and bioactive agent delivery characteristics and are suitable for use in drug delivery or cosmetic applications.