US Patent No: 4,637,698

Number of patents in Portfolio can not be more than 2000

Photochromic compound and articles containing the same

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Importance

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Abstract

Photochromic compounds represented by the graphic formula: ##STR1## wherein: (a) R.sub.1 is selected from the group consisting of C.sub.1 -C.sub.8 alkyl, phenyl, phen(C.sub.1 -C.sub.4) alkyl, allyl and mono- and di-substituted phenyl, said substituents being selected from C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.5 alkoxy; (b) R.sub.2 and R.sub.3 are each selected from the group consisting of C.sub.1 -C.sub.5 alkyl, phenyl, C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.5 alkoxy mono- and disubstituted phenyl, benzyl or combined to form a cyclic ring selected from the group consisting of an alicyclic ring containing from 6 to 8 carbon atoms (including the spiro carbon atom), norbornyl and adamantyl, and (c) R.sub.4 and R.sub.5 are each selected from the group consisting of hydrogen, C.sub.1 -C.sub.5 alkyl, halogen, C.sub.1 -C.sub.5 alkoxy, nitro, cyano and C.sub.1 -C.sub.8 alkoxycarbonyl are described. Solvent systems which form photochromic compositions with the above compounds and articles containing the photochromic compound are described. The compound or compositions typically change from a colorless (nonexcited) or pale color, e.g., yellow, to blue after exposure to ultraviolet light.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PPG INDUSTRIES OHIO, INC.CLEVELAND, OH2210

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hurditch, Rodney J Providence, RI 9 288
Kwak, Won S Akron, OH 7 342

Cited Art

Patent Info (Count) # Cites Year
 
AMERICAN OPTICAL CORPORATION (2)
4,215,010 Photochromic compounds 129 1978
4,342,668 Photochromic compounds 129 1980
 
AO, INC. (1)
4,440,672 Photochromic composition resistant to fatigue 23 1982
 
SOLA INTERNATIONAL INC. (1)
4,289,497 Gradient photochromic lens and method selectively reducing photochromic activity 23 1980

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
PPG INDUSTRIES OHIO, INC. (42)
4,816,584 Photochromic spiro(indoline)benzoxazines 106 1987
4,909,963 Photochromic article 11 1988
4,931,221 Photochromic spiropyran compounds 46 1988
4,994,208 Photochromic polymeric article 58 1989
4,980,089 Photochromic spiropyran compounds 27 1989
5,066,818 Photochromic naphthopyran compounds 132 1990
5,021,196 Method for preparing variable-light transmittance article 14 1990
5,200,116 Photochromic chromene compounds 53 1990
5,244,602 Photochromic naphthopyrans 43 1990
5,288,877 Continuous process for preparing indolenine compounds 2 1991
5,200,483 Polyol(allyl carbonate) composiitons and articles prepared there from 24 1991
5,221,721 Polymerizable composition 9 1992
5,246,630 Polymerizable composition 7 1993
5,973,093 Polymerizable polyol (allyl carbonate) composition 6 1996
5,965,680 Optical resin composition from polyol((meth)acryloyl carbonate) monomer 5 1996
5,739,243 Polymerizable composition 16 1996
5,917,006 Optical resin composition 14 1998
5,976,422 Optical resin composition 13 1998
5,942,158 One-component optical resin composition 14 1998
5,932,681 Method of preparing an optical polymerizate 17 1998
5,981,634 Method of preparing photochromic articles 7 1998
6,077,921 Polymerizable polyol (allyl carbonate) compositions 3 1998
6,068,797 Method of preparing a shaped article having a photochromic coating thereon 34 1998
6,316,570 Polymerizable composition of aliphatic polyol (allyl carbonate) 0 1999
6,342,571 High refractive index optical resin composition 16 1999
6,262,211 Polymerizable polyol(allyl carbonate) composition 1 2000
6,506,864 Polymerizable composition of allyl functional monomers 1 2000
7,098,290 Method of preparing an optical polymerizate 3 2000
7,087,698 Method of preparing an optical polymerizate 0 2000
6,631,021 Polyfunctional thiirane compounds 7 2001
7,144,969 Impact resistant polyureaurethane and polyureaurethane prepolymer having low NCO/OH ratio 10 2002
7,214,754 Polymerizable polyol (allyl carbonate) compositions 1 2003
7,411,034 Sulfide-containing polythiols 0 2005
8,017,720 Sulfur-containing oligomers and high index polyurethanes prepared therefrom 0 2005
8,399,094 Multilayer laminated articles including polyurethane and/or poly(ureaurethane) layers and methods of making the same 0 2006
8,399,559 Polyurethanes, articles and coatings prepared therefrom and methods of making the same 0 2006
8,349,986 Poly(ureaurethane)s, articles and coatings prepared therefrom and methods of making the same 0 2006
7,696,296 Compositions and articles prepared from the thioether functional oligomeric polythiols 0 2007
7,687,597 Thioether functional oligomeric polythiols and articles prepared therefrom 0 2007
7,553,925 Thioether functional oligomeric polythiols and articles prepared therefrom 0 2007
7,491,790 Sulfide-containing polythiols 0 2008
8,207,286 Methods for preparing polyurethanes 0 2009
 
TRANSITIONS OPTICAL, INC. (33)
5,238,981 Photochromic naphthopyrans 144 1992
5,274,132 Photochromic naphthopyran compounds 155 1992
5,405,958 Photochromic spiro(indoline)naphthoxazine compounds 141 1992
5,369,158 Photochromic naphthopyrans 75 1993
5,466,398 Photochromic substituted naphthopyran compounds 125 1993
5,384,077 Photochromic naphthopyran compounds 132 1993
5,458,814 Substituted naphthopyrans 124 1993
5,429,774 Benzopyran compounds 127 1994
5,451,344 Photochromic naphthopyran compounds 91 1994
5,391,327 Photochromic compositions of improved fatigue resistance 115 1994
5,514,817 Substituted phenanthropyrans 33 1994
5,458,815 Photochromic naphthopyran compounds 67 1994
5,411,679 Benzopyrans 86 1994
5,585,042 Photochromic naphthopyrans 14 1994
5,552,090 Photochromic naphthopyran compounds 27 1994
5,573,712 Substituted naphthopyrans 29 1995
5,637,262 Photochromic substituted naphthopyran compounds 16 1995
5,674,432 Photochromic naphthopyran compounds 14 1995
5,565,147 Photochromic naphthopyran compounds 25 1995
5,658,500 Substituted naphthopyrans 21 1995
5,658,501 Substituted naphthopyrans 75 1995
5,656,206 Substituted naphthopyrans 18 1995
5,552,091 Benzopyran compounds 31 1995
5,650,098 Substituted naphthopyrans 11 1995
5,645,767 Photochromic indeno-fused naphthopyrans 131 1995
5,578,252 Photochromic substituted naphthopyran compounds 28 1995
5,651,923 Substituted naphthopyrans 33 1995
5,744,070 Photochromic substituted naphthopyran compounds 6 1995
5,753,146 Photochromic naphthopyran compositions of neutral color 37 1996
5,955,520 Photochromic indeno-fused naphthopyrans 13 1996
5,698,141 Photochromic heterocyclic fused indenonaphthopyrans 67 1997
5,723,072 Photochromic heterocyclic fused indenonaphthopyrans 49 1997
8,110,127 Photochromic coating exhibiting improved performance 0 2009
 
Q2100, INC. (12)
5,529,728 Process for lens curing and coating 85 1992
5,514,214 Eyeglass lens and mold spin coater 115 1993
5,516,468 Method for the production of plastic lenses 84 1994
6,494,702 Apparatus for the production of plastic lenses 16 1995
6,730,244 Plastic lens and method for the production thereof 31 1995
6,022,498 Methods for eyeglass lens curing using ultraviolet light 72 1996
5,976,423 Methods and apparatus for eyeglass lens curing using ultraviolet light 64 1996
5,928,575 Methods for eyeglass lens curing using ultraviolet light 66 1996
6,174,465 Methods for eyeglass lens curing using ultaviolet light 49 1998
6,200,124 Apparatus for eyeglass lens curing using ultraviolet light 41 1998
6,328,445 Methods and apparatus for eyeglass lens curing using ultraviolet light 41 1999
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PERFORMANCE INDICATOR LLC (8)
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7,547,894 Phosphorescent compositions and methods for identification using the same 12 2007
8,039,193 Tissue markings and methods for reversibly marking tissue employing the same 0 2007
7,842,128 Tissue marking compositions 1 2007
8,287,757 High-intensity, persistent photoluminescent formulations and objects, and methods for creating the same 0 2011
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8,282,858 High-intensity, persistent photoluminescent formulations and objects, and methods for creating the same 0 2011
8,409,662 High-intensity, persistent photoluminescent formulations and objects, and methods for creating the same 0 2012
 
PPG INDUSTRIES, INC. (7)
4,931,220 Organic photochromic pigment particulates 122 1987
4,968,454 Variable-light transmittance article and method for preparing same 86 1988
4,936,995 Photochromic compound and articles containing the same 25 1988
4,986,934 Photochromic compound and articles containing the same 10 1988
4,931,219 Photochromic compound and articles containing the same 68 1989
5,330,686 Temperature stable and sunlight protected photochromic articles 16 1992
5,340,857 Photochromic naphthopyrans 11 1993
 
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) (6)
5,139,707 Indolino-spiroquinoxalino oxazine photochromatic compounds, methods for their preparation, photochromic compositions and articles containing such compounds 31 1990
5,531,940 Method for manufacturing photochromic lenses 121 1993
5,789,015 Impregnation of plastic substrates with photochromic additives 75 1996
5,914,174 Lens or semi-finished blank comprising photochromic resin compositions 63 1996
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6,686,466 Photochromic oxazine compounds and methods for their manufacture 0 2001
 
OPHTHALMIC RESEARCH GROUP INTERNATIONAL, INC. (5)
6,201,037 Plastic lens composition and method for the production thereof 37 1989
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CORNING INCORPORATED (2)
6,034,193 Photochromic organic materials 7 1997
6,811,727 Ophthalmic filter materials 2 2002
 
VISION DYNAMICS, LLC (2)
6,171,528 Methods and apparatus for eyeglass lens curing using ultraviolet light 48 1998
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XYTRONYX, INC. (2)
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ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE (1)
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KUREHA KAGAKU KOGYO KABUSHIKI KAISHA (1)
5,017,698 Spirooxazine photochromic compounds 18 1989
 
OPTISCHE WERKE G. RODENSTOCK (1)
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PILKINGTON BROTHERS P.L.C. (1)
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PILKINGTON PLC (1)
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PPC INDUSTRIES OHIO, INC. (1)
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TOKUYAMA CORPORATION (1)
5,430,146 Spirooxazine compounds 6 1994
 
TORAY INDUSTRIES, INC. (1)
5,166,345 Photochromic compound 48 1991
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
4,705,046 Device for the qualitative measurement of uv radiation received by the skin 4 1986