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:
Nov. 25, 2003
Filed:
Feb. 16, 2001
Applicant:
Inventors:
Cheol Hee Ahn, Salt Lake City, UT (US);
Sung Wan Kim, Salt Lake City, UT (US);
Assignee:
Expression Genetics, Sandy, UT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 9/50 ;
U.S. Cl.
CPC ...
A61K 9/50 ;
Abstract
A biodegradable, novel cationic coopolymer comprising a a poly(alkylenimine)(PAI), a hydrophilic polymer, and a biodegradable linker, wherein the biodegradable linker covalently links the PAI and the hydrophilic polymer. The biodegradable cationic copolymers in the present invention can be used in drug delivery and are especially useful for delivery of a nucleic acid or any anionic bioactive agent to various organs and tissues after local or systemic administration.