C09B 1/62
With mercapto groups substituted by a heterocyclic ring
Official title: with mercapto groups substituted by a heterocyclic ring
C09B1/62 (With mercapto groups substituted by a heterocyclic ring) appears on 8 US grants and 2 published applications in this corpus.
Search patents in C09B- Granted patents
- 8
- Published applications
- 2
- Assignees
- 7
- Inventors
- 21
- Latest grant
- 17 Aug 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for preparing light-absorbing polymeric compositions17 Aug 2004US 6,776,930 B2Eastman Kodak Company
- Method for preparing light-absorbing polymeric compositions6 Mar 2001US 6,197,223 B1Eastman Chemical Company
- Liquid crystal composition and display element using the same9 Apr 1991US 5,006,276 AMitsubishi Kasei Corporation
- Anthraquinone dye and liquid crystal composition containing the dye9 Jul 1985US 4,528,113 AHitachi, Ltd.
- Liquid crystal compositions containing pleochroic dye11 Nov 1980US 4,232,949 AMinnesota Mining and Manufacturing Company
Most cited
By later US patents
- Liquid crystal compositions including pleochroic dye33US 4,232,950 AMinnesota Mining and Manufacturing Company · 1980
- Liquid crystal compositions containing pleochroic dye24US 4,232,949 AMinnesota Mining and Manufacturing Company · 1980
- Method for preparing light-absorbing polymeric compositions23US 6,197,223 B1Eastman Chemical Company · 2001
- Liquid crystal composition and display element using the same6US 5,006,276 AMitsubishi Kasei Corporation · 1991
- Anthraquinone dye and liquid crystal composition containing the dye5US 4,528,113 AHitachi, Ltd. · 1985