C09B 35/22
The tetrazo component being a derivative of a diaryl ether
Official title: the tetrazo component being a derivative of a diaryl ether
C09B35/22 (The tetrazo component being a derivative of a diaryl ether) appears on 8 US grants and 1 published applications in this corpus.
Search patents in C09B- Granted patents
- 8
- Published applications
- 1
- Assignees
- 4
- Inventors
- 15
- Latest grant
- 16 Mar 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 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 | 1 | 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 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Organic pigment with high transparency and hydrophobicity16 Mar 2004US 6,706,863 B2Clariant Finance (BVI) Limited
- Pigment for electrophotographic toners and developers2 Jan 2001US 6,168,895 AClariant GmbH
- Pigment for electrophotographic toners and developers22 Feb 2000US 6,028,178 AClariant GmbH
- Diazo compounds, a process for their preparation and their use as colorants19 Jun 1990US 4,935,502 AHoechst Aktiengesellschaft
- Symmetrical and asymmetrical disazo compounds having a bis-aryloxy alkane bridge26 Sep 1989US 4,870,164 AHoechst Aktiengesellschaft
Most cited
By later US patents
- Symmetrical and asymmetrical disazo compounds having a bis-aryloxy alkane bridge19US 4,870,164 AHoechst Aktiengesellschaft · 1989
- Pigment for electrophotographic toners and developers19US 6,028,178 AClariant GmbH · 2000
- Diazo compounds, a process for their preparation and their use as colorants15US 4,935,502 AHoechst Aktiengesellschaft · 1990
- Pigment for electrophotographic toners and developers11US 6,168,895 AClariant GmbH · 2001
- Bisazo dyestuffs of the 2,6-diaminopyridine8US 3,959,250 ACassella Farbwerke Mainkur Aktiengesellschaft · 1976