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. 27, 2012
Filed:
Jan. 25, 2010
Applicants:
Kazunori Kataoka, Tokyo, JP;
Naoki Kanayama, Wako, JP;
Keiji Itaka, Tokyo, JP;
Shigeto Fukushima, Narashino, JP;
Atsushi Harada, Sakai, JP;
Inventors:
Kazunori Kataoka, Tokyo, JP;
Naoki Kanayama, Wako, JP;
Keiji Itaka, Tokyo, JP;
Shigeto Fukushima, Narashino, JP;
Atsushi Harada, Sakai, JP;
Assignee:
The University of Tokyo, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides block copolymers formed of poly(ethylene glycol) segments and poly(amino acid derivative) segments having side chains of at least one kind of specific amine residue. The invention also provides polyion complexes of such copolymers with polynucleotides and the like. These block copolymers are useful as carriers for in vivo delivery of active substances such as DNA.