US Patent No: 5,891,368

Number of patents in Portfolio can not be more than 2000

Fluoranthenopyrans

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Abstract

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Described are novel photochromic 8-substituted fluoranthenopyran compounds having certain substituents at the 5 position of the pyran ring. These compounds may be represented by the following graphic formula: ##STR1## Also described are polymeric organic host materials that contain or that are coated with such compounds.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PPG INDUSTRIES OHIO, INC.CLEVELAND, OH1124
TRANSITIONS OPTICAL, INC.PINELLAS PARK, FL157

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kumar, Anil Pittsburgh, PA 244 2977

Cited Art Landscape

Patent Info (Count) # Cites Year
 
PPG INDUSTRIES, INC. (2)
* 4,931,220 Organic photochromic pigment particulates 158 1987
* 4,931,219 Photochromic compound and articles containing the same 84 1989
 
PPG INDUSTRIES OHIO, INC. (6)
* 4,360,653 Polymerizate of (allyl carbonate) and aliphatic polyurethane having acrylic unsaturation 42 1981
* 4,816,584 Photochromic spiro(indoline)benzoxazines 122 1987
* 4,880,667 Photochromic plastic article and method for preparing same 122 1987
* 4,994,208 Photochromic polymeric article 62 1989
* 5,066,818 Photochromic naphthopyran compounds 156 1990
* 5,200,483 Polyol(allyl carbonate) composiitons and articles prepared there from 25 1991
 
PLESSEY OVERSEAS LIMITED (2)
* 4,826,977 Photochromic spiropyran compounds 129 1987
* 4,818,096 Photoreactive lenses with adamantane spiro compounds 127 1987
 
TRANSITIONS OPTICAL, INC. (15)
* 5,238,981 Photochromic naphthopyrans 154 1992
* 5,274,132 Photochromic naphthopyran compounds 178 1992
* 5,405,958 Photochromic spiro(indoline)naphthoxazine compounds 157 1992
* 5,384,077 Photochromic naphthopyran compounds 148 1993
* 5,466,398 Photochromic substituted naphthopyran compounds 145 1993
* 5,458,814 Substituted naphthopyrans 139 1993
* 5,429,774 Benzopyran compounds 137 1994
* 5,514,817 Substituted phenanthropyrans 36 1994
* 5,552,090 Photochromic naphthopyran compounds 28 1994
* 5,573,712 Substituted naphthopyrans 34 1995
* 5,565,147 Photochromic naphthopyran compounds 26 1995
* 5,656,206 Substituted naphthopyrans 18 1995
* 5,552,091 Benzopyran compounds 34 1995
* 5,645,767 Photochromic indeno-fused naphthopyrans 166 1995
* 5,578,252 Photochromic substituted naphthopyran compounds 36 1995
 
CARL ZEISS VISION AUSTRALIA HOLDINGS LTD. (1)
* 5,373,033 Casting composition 36 1994
 
TOKUYAMA CORPORATION (1)
* 5,475,074 Polymerizable composition, organic glass and ophthalmic lens 21 1994
 
AMERICAN OPTICAL CORPORATION (1)
* 4,342,668 Photochromic compounds 146 1980
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Corning S.A. (1)
* 6,203,729 [Pyrrole]naphthopyranes, their preparation, and compositions and (co)polymer matrices containing them 2 1999
 
TRANSITIONS OPTICAL, INC. (11)
* 2010/0014,010 FORMULATIONS COMPRISING MESOGEN CONTAINING COMPOUNDS 3 2008
* 2009/0326,186 MESOGEN CONTAINING COMPOUNDS 0 2008
8,003,005 Alignment facilities for optical dyes 3 2008
7,910,019 Mesogen containing compounds 7 2009
7,910,020 Liquid crystal compositions comprising mesogen containing compounds 8 2009
* 2009/0323,011 MESOGEN CONTAINING COMPOUNDS 3 2009
8,628,685 Mesogen-containing compounds 0 2011
8,623,238 Mesogenic stabilizers 0 2011
8,613,868 Mesogenic stabilizers 0 2011
8,431,039 Mesogenic stabilizers 0 2011
8,349,210 Mesogenic stabilizers 2 2011
 
Vimicro Corporation (1)
6,207,084 Naphthopyrans annelated in C6-C7, their preparation and compositions and (CO)polymer matrices containing them 1 1999
* Cited By Examiner