US Patent No: 5,891,368
Number of patents in Portfolio can not be more than 2000
Fluoranthenopyrans
Stats
-
Apr 6, 1999
Issued date -
Oct 1, 1997
filing date -
08/942,182
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
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.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 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 | |
| 5,384,077 Photochromic naphthopyran compounds | 132 | 1993 | |
| 5,466,398 Photochromic substituted naphthopyran compounds | 125 | 1993 | |
| 5,458,814 Substituted naphthopyrans | 124 | 1993 | |
| 5,429,774 Benzopyran compounds | 127 | 1994 | |
| 5,514,817 Substituted phenanthropyrans | 33 | 1994 | |
| 5,552,090 Photochromic naphthopyran compounds | 27 | 1994 | |
| 5,573,712 Substituted naphthopyrans | 29 | 1995 | |
| 5,565,147 Photochromic naphthopyran compounds | 25 | 1995 | |
| 5,656,206 Substituted naphthopyrans | 18 | 1995 | |
| 5,552,091 Benzopyran compounds | 31 | 1995 | |
| 5,645,767 Photochromic indeno-fused naphthopyrans | 131 | 1995 | |
| 5,578,252 Photochromic substituted naphthopyran compounds | 28 | 1995 | |
|
|
|||
| 4,360,653 Polymerizate of (allyl carbonate) and aliphatic polyurethane having acrylic unsaturation | 40 | 1981 | |
| 4,816,584 Photochromic spiro(indoline)benzoxazines | 106 | 1987 | |
| 4,880,667 Photochromic plastic article and method for preparing same | 104 | 1987 | |
| 4,994,208 Photochromic polymeric article | 59 | 1989 | |
| 5,066,818 Photochromic naphthopyran compounds | 133 | 1990 | |
| 5,200,483 Polyol(allyl carbonate) composiitons and articles prepared there from | 24 | 1991 | |
|
|
|||
| 4,215,010 Photochromic compounds | 130 | 1978 | |
| 4,342,668 Photochromic compounds | 130 | 1980 | |
|
|
|||
| 4,826,977 Photochromic spiropyran compounds | 113 | 1987 | |
| 4,818,096 Photoreactive lenses with adamantane spiro compounds | 111 | 1987 | |
|
|
|||
| 4,931,220 Organic photochromic pigment particulates | 122 | 1987 | |
| 4,931,219 Photochromic compound and articles containing the same | 68 | 1989 | |
|
|
|||
| 5,373,033 Casting composition | 32 | 1994 | |
|
|
|||
| 5,475,074 Polymerizable composition, organic glass and ophthalmic lens | 20 | 1994 | |