C09B 43/325
By reacting sulfonic acids with amines
Official title: {by reacting sulfonic acids with amines}
C09B43/325 (By reacting sulfonic acids with amines) appears on 5 US grants and 1 published applications in this corpus.
Search patents in C09B- Granted patents
- 5
- Published applications
- 1
- Assignees
- 5
- Inventors
- 14
- Latest grant
- 24 Mar 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 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 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Photoresist composition for use in color filters24 Mar 1998US 5,731,110 ASumitomo Chemical Company, Limited
- Azo dyes for use in color filters and method for production of color filters11 Nov 1997US 5,686,585 ASumitomo Chemical Company, Limited
- Azo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine series14 Dec 1993US 5,270,456 ABASF SE
- Sulfoethylaminosulfonyl substituted disazo dyes10 Dec 1985US 4,558,121 ACiba-Geigy Corporation
- Ortho-carboxyphenyl azo ortho-hydroxypyrazole yellow dyes having silver halide developing capability3 Jun 1980US 4,206,115 APolaroid Corporation
Most cited
By later US patents
- Photoresist composition for use in color filters10US 5,731,110 ASumitomo Chemical Company, Limited · 1998
- Azo dyes for use in color filters and method for production of color filters6US 5,686,585 ASumitomo Chemical Company, Limited · 1997
- Azo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine series3US 5,270,456 ABASF SE · 1993
- Ortho-carboxyphenyl azo ortho-hydroxypyrazole yellow dyes having silver halide developing capability2US 4,206,115 APolaroid Corporation · 1980
- Sulfoethylaminosulfonyl substituted disazo dyes1US 4,558,121 ACiba-Geigy Corporation · 1985