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:
Sep. 02, 2025
Filed:
Sep. 25, 2020
Nof Corporation, Tokyo, JP;
Tokyo Institute of Technology, Tokyo, JP;
Hiroki Yoshioka, Kawasaki, JP;
Ken Hamura, Kawasaki, JP;
Kazuki Osakama, Kawasaki, JP;
Nobuhiro Nishiyama, Tokyo, JP;
NOF CORPORATION, Tokyo, JP;
TOKYO INSTITUTE OF TECHNOLOGY, Tokyo, JP;
Abstract
A multi-arm, degradable polyethylene glycol derivative with a high molecular weight that does not cause vacuolation of cells is provided. A degradable polyethylene glycol derivative represented by the following formula (1): wherein n1 and n2 are each independently 45-950, Wand Ware each independently an oligopeptide of 2-47 residues, a1 and a2 are each independently 1-8, Q is a hydrocarbon chain having 2-12 carbon atoms and optionally containing an oxygen atom and/or a nitrogen atom, Xand Xare each independently a functional group capable of reacting with a bio-related substance, and L, L, L, L, Land Lare each independently a divalent spacer.