C09B 29/16
Naphthol-sulfonic acids
C09B29/16 (Naphthol-sulfonic acids) appears on 14 US grants and 8 published applications in this corpus.
Search patents in C09B- Granted patents
- 14
- Published applications
- 8
- Assignees
- 16
- Inventors
- 58
- Latest grant
- 1 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 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 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Joint compounds and plasters with a complexometric dye and methods1 Feb 2022US 11,236,234 B2United States Gypsum Company
- Printing ink composition28 Nov 2017US 9,828,507 B2Seiko Epson Corporation
- Aqueous coloring composition for textile printing, textile printing method, and fabric22 Sep 2015US 9,139,954 B2FUJIFILM Corporation
- Methanesulfonamide azo dyes22 May 2007US 7,220,843 B2Clariant Produkte (Deutschland) GmbH
- Biodegradable azo dyes23 Jan 1996US 5,486,214 AIdaho Research Foundation, Inc.
- Blue ink-jet ink and tablet14 Jan 2021US 2021/0009835 A1Toppan Printing Co., Ltd.
- Joint compounds and plasters with a complexometric dye and methods4 Jul 2019US 2019/0203050 A1United States Gypsum Company
- Enhanced fluorescence readout and reduced inhibition for nucleic acid amplification tests25 Apr 2019US 2019/0119737 A1The Regents of the University of California
- Inorganic-organic hybrid compound27 Apr 2017US 2017/0112948 A1
- Printing ink composition17 Mar 2016US 2016/0075879 A1Seiko Epson Corporation
Most cited
By later US patents
- Azo dye compound, ink containing the same, and recording method and instrument using the ink18US 5,466,282 ACanon Kabushiki Kaisha · 1995
- Magenta dye, jet ink, and color set13US 5,254,160 ALexmark International, Inc. · 1993
- Colored foodstuffs and beverages10US 3,939,283 ABeecham Group Limited · 1976
- Biodegradable azo dyes9US 5,486,214 AIdaho Research Foundation, Inc. · 1996
- Photographic material suited for the production of multicolor images by means of diffusion transfer of complexed silver halide6US 4,269,924 AAgfa-Gevaert · 1981