Fluoranthenopyrans

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5891368
SERIAL NO

08942182

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ATTORNEY / AGENT: (SPONSORED)

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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, OH932
TRANSITIONS OPTICAL, INC.PINELLAS PARK, FL160

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kumar, Anil Pittsburgh, PA 255 3200

Cited Art Landscape

Patent Info (Count) # Cites Year
 
PPG INDUSTRIES, INC. (2)
* 4931220 Organic photochromic pigment particulates 162 1987
* 4931219 Photochromic compound and articles containing the same 88 1989
 
PPG INDUSTRIES OHIO, INC. (6)
* 4360653 Polymerizate of (allyl carbonate) and aliphatic polyurethane having acrylic unsaturation 42 1981
* 4816584 Photochromic spiro(indoline)benzoxazines 126 1987
* 4880667 Photochromic plastic article and method for preparing same 126 1987
* 4994208 Photochromic polymeric article 62 1989
* 5066818 Photochromic naphthopyran compounds 161 1990
* 5200483 Polyol(allyl carbonate) composiitons and articles prepared there from 25 1991
 
PLESSEY OVERSEAS LIMITED (2)
* 4826977 Photochromic spiropyran compounds 133 1987
* 4818096 Photoreactive lenses with adamantane spiro compounds 131 1987
 
TRANSITIONS OPTICAL, INC. (15)
* 5238981 Photochromic naphthopyrans 154 1992
* 5274132 Photochromic naphthopyran compounds 182 1992
* 5405958 Photochromic spiro(indoline)naphthoxazine compounds 161 1992
* 5384077 Photochromic naphthopyran compounds 152 1993
* 5466398 Photochromic substituted naphthopyran compounds 149 1993
* 5458814 Substituted naphthopyrans 140 1993
* 5429774 Benzopyran compounds 140 1994
* 5514817 Substituted phenanthropyrans 36 1994
* 5552090 Photochromic naphthopyran compounds 28 1994
* 5573712 Substituted naphthopyrans 34 1995
* 5565147 Photochromic naphthopyran compounds 26 1995
* 5656206 Substituted naphthopyrans 18 1995
* 5552091 Benzopyran compounds 37 1995
* 5645767 Photochromic indeno-fused naphthopyrans 170 1995
* 5578252 Photochromic substituted naphthopyran compounds 36 1995
 
CARL ZEISS VISION AUSTRALIA HOLDINGS LTD. (1)
* 5373033 Casting composition 39 1994
 
TOKUYAMA CORPORATION (1)
* 5475074 Polymerizable composition, organic glass and ophthalmic lens 21 1994
 
AMERICAN OPTICAL CORPORATION (1)
* 4342668 Photochromic compounds 150 1980
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Corning S.A. (1)
* 6203729 [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 4 2008
* 2009/0326,186 MESOGEN CONTAINING COMPOUNDS 1 2008
8003005 Alignment facilities for optical dyes 4 2008
7910019 Mesogen containing compounds 8 2009
7910020 Liquid crystal compositions comprising mesogen containing compounds 8 2009
* 2009/0323,011 MESOGEN CONTAINING COMPOUNDS 6 2009
8628685 Mesogen-containing compounds 0 2011
8623238 Mesogenic stabilizers 0 2011
8613868 Mesogenic stabilizers 0 2011
8431039 Mesogenic stabilizers 0 2011
8349210 Mesogenic stabilizers 2 2011
 
Vimicro Corporation (1)
6207084 Naphthopyrans annelated in C6-C7, their preparation and compositions and (CO)polymer matrices containing them 1 1999
* Cited By Examiner