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:
Nov. 29, 2022
Filed:
Nov. 15, 2018
Applicant:
Chugai Seiyaku Kabushiki Kaisha, Tokyo, JP;
Inventors:
Kazuo Hattori, Gotemba, JP;
Takashi Nakai, Gotemba, JP;
Teruo Nakamura, Gotemba, JP;
Tsuyoshi Shimoboji, Gotemba, JP;
Assignee:
CHUGAI SEIYAKU KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B 37/08 (2006.01); A61K 47/61 (2017.01); A61K 31/728 (2006.01);
U.S. Cl.
CPC ...
C08B 37/0072 (2013.01); A61K 31/728 (2013.01); A61K 47/61 (2017.08);
Abstract
The present invention provides hyaluronic acid derivatives including one or more of each of repeating units represented by the formulae (Ia), (Ib), and (Ic) in which certain cationic sites, certain hydrophobic sites, and certain hydrophilic sites have been introduced. In addition, the present invention provides complexes of the hyaluronic acid derivatives with a drug and pharmaceutical compositions including the hyaluronic acid derivatives, in particular, complexes of the hyaluronic acid derivatives with a drug.