Photochromic polyurethane laminate

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United States of America Patent

PATENT NO 11754752
SERIAL NO

17516619

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
HOYA OPTICAL LABS OF AMERICA INC651 E CORPORATE DRIVE LEWISVILLE TX 75057

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fan, Ping Ramsey, US 56 972
Sugimura, Hideyo Ramsey, US 31 719
Vu, Hannah Ramsey, US 25 117
Vu, Hao Ramsey, US 6 21

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