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:
Mar. 28, 2023
Filed:
Jan. 06, 2021
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Rumiko Kitagawa, Otsu, JP;
Masataka Nakamura, Otsu, JP;
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
B29D 11/00038 (2013.01);
Abstract
A method of producing a medical device having a substrate and a hydrophilic polymer layer, including the steps of: pretreating the substrate by placing the substrate in an alkali solution and heating the substrate at a temperature ranging from 50° C. to 100° C.; and heating a solution containing the pretreated substrate, a hydrophilic polymer having an acidic group and a hydroxyalkyl group, and an organic acid at a temperature ranging from 50° C. to 100° C. Provided is a simple method of producing a medical device imparted with hydrophilicity excellent in durability.