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:
May. 27, 2003
Filed:
Jun. 19, 2002
Applicant:
Inventors:
Yoon Sung Nam, Kyunggi-do, KR;
Hyung Seok Kang, Kyunggi-do, KR;
Sang Hoon Han, Kyunggi-do, KR;
Ih Seop Chang, Kyunggi-do, KR;
Assignee:
Pacific Corporation, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 1/502 ;
U.S. Cl.
CPC ...
B32B 1/502 ;
Abstract
There are provided amphiphilic biodegradable block copolymers comprising polyethylenimine (PEI) as a hydrophilic block and aliphatic polyesters as a hydrophobic block, which can form various size of polymer aggregates and have very low critical micelle concentration, approximately 10 g/l in comparison with low-molecular-weight micelle, and self-assembled polymer aggregates formed from the block copolymers in aqueous milieu, which can be applied to solubilization of insoluble drug and a delivery system of proteins, genes or drugs.