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:
Jun. 03, 2025
Filed:
Mar. 27, 2020
Applicant:
Hoya Lens Thailand Ltd., Pathumthani, TH;
Inventors:
Takuya Shimada, Tokyo, JP;
Teruo Yamashita, Tokyo, JP;
Assignee:
HOYA LENS THAILAND LTD., Pathumthani, TH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 4/00 (2006.01); C08F 222/10 (2006.01); C09D 5/29 (2006.01); C09D 135/02 (2006.01); G02B 1/111 (2015.01); G02C 7/10 (2006.01);
U.S. Cl.
CPC ...
C09D 5/29 (2013.01); C08F 222/1063 (2020.02); C09D 4/00 (2013.01); C09D 135/02 (2013.01); G02B 1/111 (2013.01); G02C 7/102 (2013.01); C08F 2800/20 (2013.01);
Abstract
A coating composition for an optical article containing a photochromic compound and two or more (meth)acrylates, the two or more (meth)acrylates containing a non-cyclic difunctional methacrylate having a molecular weight of 500 or more and a non-cyclic tri- or higher functional (meth)acrylate.