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:
Jan. 11, 2022
Filed:
Mar. 23, 2018
Nof Corporation, Tokyo, JP;
Kota Tange, Kawasaki, JP;
Hiroki Yoshioka, Kawasaki, JP;
Takuma Tsubusaki, Kawasaki, JP;
Masaki Kamiya, Kawasaki, JP;
NOF CORPORATION, Tokyo, JP;
Abstract
A degradable polyethylene glycol derivative represented by formula (1). R, R, and Rrepresent each independently a hydrogen atom or a hydrocarbon group having from 1 to 6 carbon atoms, and at least one of R, R, Rand Ris the hydrocarbon group; Pis a straight-chain or branched polyethylene glycol chain having a number of ethylene glycol units of 3 or more; Pis a straight-chain polyethylene glycol chain having a number of ethylene glycol units of 3 or more; w is an integer of 1 to 8; u is an integer of 1 to 10; Xis a chemically reactive functional group; and Z, Zand Zare each independently a selected divalent spacer.