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:
Sep. 29, 2026
Filed:
Nov. 24, 2021
Nof Corporation, Tokyo, JP;
NOF CORPORATION, Tokyo, JP;
Abstract
Provided is a surface treatment agent for an ophthalmic device that can impart wettability and lubricity to the surface of a silicone hydrogel, more specifically, a surface treatment agent for an ophthalmic device that can subject the silicone hydrogel to surface treatment even when the silicone hydrogel is not caused to present any specific complementary functional group. Also provided are a surface-treated silicone hydrogel whose surface has been treated with the surface treatment agent for an ophthalmic device, and an ophthalmic device using the surface-treated silicone hydrogel. It has been found that the above-mentioned objects can be achieved by using a water-soluble copolymer obtained by copolymerizing a phosphorylcholine group-containing monomer, a specific silicone monomer, and a thermally reactive monomer or a photoreactive monomer, the copolymer having water solubility controlled to a specific level. Thus, the present invention has been completed.