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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.:

US 11591426 B1

PDFFull Text
Date of Patent:
Feb. 28, 2023

Filed:

Sep. 29, 2020

Copolymer, wetting agent, medical device, and method for producing same

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Kyohei Yamashita, Otsu, JP;

Takeshi Ishigaki, Otsu, JP;

Masataka Nakamura, Otsu, JP;

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Alma Pipic

Int. Cl.
CPC ...
A61L 27/34 (2006.01); A61L 29/00 (2006.01); C08F 220/36 (2006.01); C08F 220/54 (2006.01); C08F 220/56 (2006.01); C09D 133/24 (2006.01); G02B 1/00 (2006.01); C08F 220/00 (2006.01); G02C 7/04 (2006.01); G02B 1/04 (2006.01); A61L 29/08 (2006.01); A61L 12/14 (2006.01); C08F 220/28 (2006.01);
U.S. Cl.
CPC ...
C08F 220/36 (2013.01); A61L 12/14 (2013.01); A61L 27/34 (2013.01); A61L 29/085 (2013.01); C08F 220/54 (2013.01); C08F 220/56 (2013.01); C09D 133/24 (2013.01); G02B 1/043 (2013.01); G02C 7/04 (2013.01); A61L 2400/10 (2013.01); A61L 2430/16 (2013.01); C08F 220/283 (2020.02);
Abstract

Disclosed are: a polymer for treating the surface of a medical device such as a contact lens to suppress the reduction in lubricity of the device even when the device is scrubbed; a medical device having the polymer on the surface so that the reduction in lubricity over time is suppressed; and a wetting agent containing the polymer. The polymer for treating the surface is a copolymer which is water-soluble and includes as constitutional units the following monomers A and B: monomer A: a monomer containing a (meth)acryloyl group and an ester or amide structure in a molecule, in which the ester or amide structure is not constituted by including a part of the (meth)acryloyl group; monomer B: a monomer containing a (meth)acrylamide group in a molecule and having a structure different from that of the monomer A.

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