C09B 41/004
Containing a reaction assistant
Official title: {containing a reaction assistant, e.g. urea}
C09B41/004 (Containing a reaction assistant) appears on 7 US grants and 1 published applications in this corpus.
Search patents in C09B- Granted patents
- 7
- Published applications
- 1
- Assignees
- 5
- Inventors
- 14
- Latest grant
- 20 Aug 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 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 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for preparing metal compounds of an azo compound in the presence of seed crystals20 Aug 2013US 8,512,823 B2LANXESS Deutschland GmbH
- Preparation of azo pigments with low PCB content by coupling in the presence of olefins7 Sep 1993US 5,243,032 AHoechst Aktiengesellschaft
- Process for the preparation of metallizable azo dyes by carrying out the coupling in the presence of a buffer mixture23 Mar 1993US 5,196,518 ACiba-Geigy Corporation
- Process for the preparation of metallisable azo dyes30 Jun 1992US 5,126,435 ACiba-Geigy Corporation
- Process for the preparation of azo dyes by carrying out coupling in the presence of an alkali metal chloride and ammonium chloride25 Jun 1991US 5,026,830 ACiba-Geigy Corporation
Most cited
By later US patents
- Preparation of azo dyestuffs by diazotization and coupling in the presence of an ester8US 4,795,807 ACassella Aktiengesellschaft · 1989
- Preparation of azo pigments with low PCB content by coupling in the presence of olefins5US 5,243,032 AHoechst Aktiengesellschaft · 1993
- Process for the preparation of metallizable azo dyes carrying out coupling in an inert gas atmosphere in the presence of an ammonium salt2US 4,994,561 ACiba-Geigy Corporation · 1991
- Process for the preparation of azo dyes by carrying out coupling in the presence of an alkali metal chloride and ammonium chloride2US 5,026,830 ACiba-Geigy Corporation · 1991
- Process for the preparation of metallisable azo dyes1US 5,126,435 ACiba-Geigy Corporation · 1992