B41M 5/1363
Leuco dyes forming a complex with a metal cation
Official title: {Leuco dyes forming a complex with a metal cation}
B41M5/1363 (Leuco dyes forming a complex with a metal cation) appears on 8 US grants and 0 published applications in this corpus.
Search patents in B41M- Granted patents
- 8
- Published applications
- 0
- Assignees
- 3
- Inventors
- 12
- Latest grant
- 8 Dec 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Color-forming compounds and their use in carbonless imaging8 Dec 1998US 5,846,901 AMinnesota Mining and Manufacturing Company
- Yellow color-formers20 Jun 1995US 5,426,085 AMinnesota Mining and Manufacturing Company
- Yellow color-formers27 Dec 1994US 5,376,451 AMinnesota Mining and Manufacturing Company
- Thiazolo[5,4-D]thiazsole Color-formers27 Sep 1994US 5,350,857 AMinnesota Mining and Manufacturing Company
- Thiazolo[5,4-d]thiazole color-formers8 Feb 1994US 5,284,812 AMinnesota Mining and Manufacturing Company
No published applications in this class yet.
Most cited
By later US patents
- Color-forming compounds and their use in carbonless imaging9US 5,846,901 AMinnesota Mining and Manufacturing Company · 1998
- Recording material7US 4,876,233 AFuji Photo Film Co., Ltd. · 1989
- Yellow color-formers3US 5,376,451 AMinnesota Mining and Manufacturing Company · 1994
- Chelatable triazolylazo-N-alkyl(cycloalkyl)acylacetamide dyes1US 3,993,637 AEastman Kodak Company · 1976