C09B 57/06
Naphtholactam dyes
C09B57/06 (Naphtholactam dyes) appears on 57 US grants and 7 published applications in this corpus.
Search patents in C09B- Granted patents
- 57
- Published applications
- 7
- Assignees
- 12
- Inventors
- 72
- Latest grant
- 12 Mar 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 2 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Color converter12 Mar 2019US 10,230,023 B2BASF SE
- Polymerizable liquid crystal composition, polarized light-emitting coating material, novel naphtholactam derivative novel coumarin derivative, novel nile red derivative, and novel anthracene derivative25 Oct 2016US 9,475,991 B2Adeka Corporation
- Color converter2 Aug 2016US 9,406,848 B2BASF SE
- Optical filter8 Jan 2013US 8,350,054 B2Adeka Corporation
- Naphtholactam dyes27 Jul 1999US 5,929,245 ABASF SE
- Fluorescent macromolecule and uses thereof20 Jul 2023US 2023/0227657 A1Queensland University of Technology
- Novel color converter29 Sep 2016US 2016/0284947 A1BASF SE
- Novel color converter17 Apr 2014US 2014/0103374 A1BASF SE
- Polymerizable liquid crystal composition, polarized light-emitting coating material, novel naphtholactam derivative novel coumarin derivative, novel nile red derivative, and novel anthracene derivative19 Dec 2013US 2013/0334461 A1Adeka Corporation
- Optical filter23 Jun 2011US 2011/0152538 A1Adeka Corporation
Most cited
By later US patents
- Cationic dyestuffs54US 3,971,807 ABayer Aktiengesellschaft · 1976
- Naphtholactam dyes and optical recording medium containing these dyes31US 4,939,012 ABASF SE · 1990
- Dyes containing imidazolymethylene groups19US 4,451,398 ABASF SE · 1984
- Cationic dyestuffs10US 3,959,310 ABayer Aktiengesellschaft · 1976
- Calcium complexing dyes and their use in analytical compositions, elements and methods9US 4,795,712 AEastman Kodak Company · 1989