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. 01, 2005
Filed:
Sep. 15, 2003
Applicant:
Ren-hua Jin, Tokyo, JP;
Inventor:
Ren-Hua Jin, Tokyo, JP;
Assignee:
Kawamura Institute of Chemical Research, Sakura, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G073/00 ; C08G083/00 ;
U.S. Cl.
CPC ...
Abstract
A water-soluble block copolymer having a mass average molecular weight of 2500 to 800000 and comprising, within a molecule, a poly(ethylene imine) block unit and a poly(N-propionylethylene imine) block unit is a novel linear or star-shaped water-soluble block copolymer.