C09B 49/10
From diphenylamines, indamines, or indophenols
Official title: from diphenylamines, indamines, or indophenols {, e.g. p-aminophenols or leucoindophenols}
C09B49/10 (From diphenylamines, indamines, or indophenols) appears on 5 US grants and 1 published applications in this corpus.
Search patents in C09B- Granted patents
- 5
- Published applications
- 1
- Assignees
- 2
- Inventors
- 12
- Latest grant
- 22 Jun 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 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 | 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 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Fluorogenic pH-sensitive dyes, film and kit comprising the same22 Jun 2021US 11,041,812 B2Sfc Co., Ltd.
- Sulphur dyestuffs, a process for their manufacture and their use from hydroxy-diphenylamine compounds13 Sep 1983US 4,403,995 ACassella Aktiengesellschaft
- Process for the preparation of derivatives of 3-(4-hydroxy-anilino)carbazole16 Mar 1982US 4,320,060 ACassella Aktiengesellschaft
- Process for the preparation of a condensation product from phenothiazine and p-nitrosophenol24 Nov 1981US 4,302,582 ACassella Aktiengesellschaft
- Condensation product from phenothiazine and p-nitrosophenol, process for the production of the condensation product, process for the production of sulfur dyestuffs using the condensation product and the sulfur dyestuffs prepared therewith19 Aug 1980US 4,218,219 ACassella Aktiengesellschaft
Most cited
By later US patents