High refractive index photochromic ophthalmic article

United States of America Patent

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Jan 13, 1998
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N/A
app pub date
Oct 13, 1994
filing date
Oct 15, 1993

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Expired

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Abstract

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Organic ophthalmic articles are photochromic and have high indices of refraction.

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Patent Owner	Address
PPG INDUSTRIES OHIO INC	3800 WEST 143RD STREET CLEVELAND OH 44111

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C08F:MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONL....

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Inventor Name	Address	# of filed Patents	Total Citations
Coleman, Charles R	Pittsburgh, PA	34	783
Herold, Robert D	Monroeville, PA	34	534
Selvig, Christopher D	Pittsburgh, PA	9	170

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High refractive index photochromic ophthalmic article

Number of patents in Portfolio can not be more than 2000

United States of America Patent

08322834

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PATENT NO	5708064
SERIAL NO	08322834
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08322834

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