Photochromic multiple ring-fused naphthopyrans having extreme longwave absorption extending far into the visible wavelength range

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United States of America Patent

PATENT NO 10647852
APP PUB NO 20190284397A1
SERIAL NO

16336185

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Abstract

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The present invention relates to photochromic polyfused naphthopyrans having very long-wave absorption of the closed form extending well into the visible wavelength range, and to the use thereof in all kinds of plastics, especially for ophthalmic purposes, preferably in driving glasses.

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Patent Owner(s)

Patent OwnerAddress
RODENSTOCK GMBH80687 MÜNCHEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Weigand, Udo München, DE 30 241
Zinner, Herbert Rohrbach, DE 20 230

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