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:
Dec. 20, 2022
Filed:
May. 29, 2020
Applicant:
Nof Corporation, Tokyo, JP;
Inventors:
Takuma Tsubusaki, Kawasaki, JP;
Yuji Yamamoto, Kawasaki, JP;
Assignee:
NOF CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 47/60 (2017.01); C08G 65/333 (2006.01); C07D 405/06 (2006.01); C08G 65/329 (2006.01); C07D 317/22 (2006.01); C07D 317/28 (2006.01); C08G 65/331 (2006.01); C08G 65/337 (2006.01); C08G 65/334 (2006.01); C07D 317/20 (2006.01); C07D 317/24 (2006.01);
U.S. Cl.
CPC ...
C08G 65/33396 (2013.01); C07D 317/20 (2013.01); C07D 317/22 (2013.01); C07D 317/24 (2013.01); C07D 317/28 (2013.01); C07D 405/06 (2013.01); C08G 65/329 (2013.01); C08G 65/333 (2013.01); C08G 65/337 (2013.01); C08G 65/3317 (2013.01); C08G 65/3346 (2013.01); C08G 65/33324 (2013.01); C08G 65/33337 (2013.01); C08G 65/33341 (2013.01);
Abstract
A hydrophilic polymer derivative having a cyclic benzylidene acetal linker represented by the following formula (1): wherein Rand Rare each independently a hydrogen atom or a hydrocarbon group; R, R, Rand Rare each independently an electron-withdrawing or electron-donating substituent or a hydrogen atom; Xis a chemically reactive functional group; P is a hydrophilic polymer; s is 1 or 2, t is 0 or 1, and s+t is 1 or 2; w is an integer of 1 to 8; and Zand Zare each independently a selected divalent spacer.