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. 12, 2023
Filed:
Nov. 01, 2021
Applicant:
Hoya Optical Labs of America, Inc., Lewisville, TX (US);
Inventors:
Hannah Vu, Ramsey, MN (US);
Hideyo Sugimura, Ramsey, MN (US);
Ping Fan, Ramsey, MN (US);
Hao Vu, Ramsey, MN (US);
Assignee:
HOYA Optical Labs of America, Inc., Lewisville, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/04 (2006.01); C08G 18/75 (2006.01); C08G 18/42 (2006.01); B32B 27/40 (2006.01); C08G 2/10 (2006.01); C08G 18/32 (2006.01); C08G 18/10 (2006.01); G02B 5/23 (2006.01); G02C 7/10 (2006.01);
U.S. Cl.
CPC ...
G02B 1/041 (2013.01); B32B 27/40 (2013.01); C08G 2/10 (2013.01); C08G 18/10 (2013.01); C08G 18/3206 (2013.01); C08G 18/4277 (2013.01); C08G 18/758 (2013.01); G02B 5/23 (2013.01); G02C 7/102 (2013.01); Y10T 428/31551 (2015.04);
Abstract
A photochromic polyurethane laminate wherein the photochromic polyurethane layer of the laminate has been crosslinked with an isocyanate-active prepolymer using a crosslinking agent. The crosslinking agent is formulated to have at least three functional groups that are reactive with functional groups of the polyurethane or of the isocyanate-active prepolymer. A method of making the photochromic polyurethane laminate includes steps of causing the crosslinking.