C09B 31/115
Containing acid groups
Official title: {containing acid groups, e.g. -COOH, -SO3H, -PO3H2, -OSO3H, -OPO2H2; salts thereof}
C09B31/115 (Containing acid groups) appears on 4 US grants and 2 published applications in this corpus.
Search patents in C09B- Granted patents
- 4
- Published applications
- 2
- Assignees
- 4
- Inventors
- 11
- Latest grant
- 12 Apr 1994
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Azodyes containing a sulfoacetoacetic acid anilide coupling component12 Apr 1994US 5,302,704 ACiba-Geigy Corporation
- Concentrated, aqueous solutions of salts of acetoacetylamino-arylsulphonic acids and method of forming concentrated solutions of azo dyestuffs therefrom16 Aug 1983US 4,399,068 ABayer Aktiengesellschaft
- Use of water-soluble disazo dyestuffs for dyeing or printing synthetic textile material of polyamide or polyurethane fibers4 Oct 1977US 4,052,157 AHoechst Aktiengesellschaft
- Water-soluble azo dyes having a 2-acetoacetamidofluorenyl coupling component radical12 Apr 1977US 4,017,478 ASandoz Ltd.
Most cited
By later US patents
- Concentrated, aqueous solutions of salts of acetoacetylamino-arylsulphonic acids and method of forming concentrated solutions of azo dyestuffs therefrom5US 4,399,068 ABayer Aktiengesellschaft · 1983
- Use of water-soluble disazo dyestuffs for dyeing or printing synthetic textile material of polyamide or polyurethane fibers4US 4,052,157 AHoechst Aktiengesellschaft · 1977
- Azodyes containing a sulfoacetoacetic acid anilide coupling component3US 5,302,704 ACiba-Geigy Corporation · 1994
- Water-soluble azo dyes having a 2-acetoacetamidofluorenyl coupling component radical1US 4,017,478 ASandoz Ltd. · 1977