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:
Oct. 29, 2013
Filed:
Nov. 11, 2009
Applicants:
Ken-ichiro Nakamoto, Kanagawa, JP;
Chika Itoh, Kanagawa, JP;
Shuichi Yoshimura, Kanagawa, JP;
Tsuyoshi Takehana, Kanagawa, JP;
Inventors:
Ken-ichiro Nakamoto, Kanagawa, JP;
Chika Itoh, Kanagawa, JP;
Shuichi Yoshimura, Kanagawa, JP;
Tsuyoshi Takehana, Kanagawa, JP;
Assignee:
NOF Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/68 (2006.01); C08G 65/34 (2006.01); C08G 59/00 (2006.01); C08G 65/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing a polyalkylene glycol derivative having such high molecular weight and purity that the derivative can be used in pharmaceutical applications, which produces a polyalkylene glycol derivative of the formula (X) by steps (A), (B), (C) and (D), wherein R is as defined:R—(OA)OH  (X)