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:
Jun. 23, 2009
Filed:
Jun. 03, 2004
Applicants:
Toshinori Sato, Yokohama-shi, JP;
Yoshiyuki Koyama, Tokyo, JP;
Tetsuji Yamaoka, Ibaraki-shi, JP;
Inventors:
Assignees:
Keio University, Tokyo, JP;
NOF Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 47/34 (2006.01); A61K 47/30 (2006.01); C08G 65/329 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a polyethylene glycol derivative having sugar residue-containing side chains and carboxyl group-containing side chains, and a method of preparing the same. The present invention also provides a carrier for drug delivery systems and a carrier for gene transfer, both comprising the polyethylene glycol derivative.