C09B 29/325
Free of acid groups
Official title: {free of acid groups}
C09B29/325 (Free of acid groups) appears on 16 US grants and 6 published applications in this corpus.
Search patents in C09B- Granted patents
- 16
- Published applications
- 6
- Assignees
- 9
- Inventors
- 26
- Latest grant
- 15 May 2012
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 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 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- AZO pigment, pigment dispersion containing the AZO pigment, and coloring composition15 May 2012US 8,177,861 B2FUJIFILM Corporation
- Aromatic-aliphatic azo derivatives particularly as markers for petroleum products, method for synthesizing them, use thereof and derived compositions7 Jun 2011US 7,956,170 B2
- Phase change inks containing colorant compounds6 Jul 2010US 7,749,315 B2Xerox Corporation
- Colorant compounds3 Jun 2008US 7,381,831 B1Xerox Corporation
- Color developing agent, azo dye, silver halide photographic light-sensitive material, and image-forming method24 Jan 2006US 6,989,439 B2Fuji Photo Film Co., Ltd.
- Azo pigment, pigment dispersion containing the azo pigment, and coloring composition27 Jan 2011US 2011/0021764 A1FUJIFILM Corporation
- Compound for photoresist, photoresist liquid, and etching method using the same29 Apr 2010US 2010/0104985 A1
- Phase change inks containing colorant compounds9 Oct 2008US 2008/0245264 A1Xerox Corporation
- Aromatic-Aliphatic Azo Derivatives Particularly As Markers For Petroleum Products, Method For Synthesizing Them, Use Thereof And Derived Compositions17 Jan 2008US 2008/0015342 A1
- Color developing agent, azo dye, silver halide photographic light-sensitive material, and image-forming method30 Oct 2003US 2003/0204094 A1Fuji Photo Film Co., Ltd.
Most cited
By later US patents
- Colorant compounds84US 7,381,831 B1Xerox Corporation · 2008
- Heterocyclic azo dyes and pigments containing 4-quinazolinone moieties40US 4,225,489 ABayer Aktiengesellschaft · 1980
- Preparation of solutions of azo methine basic dyestuffs4US 4,248,775 ABayer Aktiengesellschaft · 1981
- Monoazo pigments containing a quinazo linonylacetoacetanilide coupling component4US 4,288,362 ABayer Aktiengesellschaft · 1981
- Certain 3-phenylhydrazono-2-amino-1,1,3-propene tricarbonitrile3US 4,401,600 ACiba-Geigy Corporation · 1983