C09B 3/02
Benzathrones
C09B3/02 (Benzathrones) appears on 43 US grants and 29 published applications in this corpus.
Search patents in C09B- Granted patents
- 43
- Published applications
- 29
- Assignees
- 19
- Inventors
- 143
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 2 | 3 |
| 2011 | 0 | 3 |
| 2012 | 0 | 3 |
| 2013 | 1 | 2 |
| 2014 | 3 | 1 |
| 2015 | 4 | 2 |
| 2016 | 2 | 3 |
| 2017 | 0 | 0 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method and system for producing light of specified wavelength1 Jul 2025US 12,344,747 B1Imam Mohammad Ibn Saud Islamic University
- Materials for electronic devices30 Apr 2019US 10,273,404 B2Merck Patent GmbH
- Composition for organic electroluminescent element, organic electroluminescent element, display and lighting20 Feb 2018US 9,899,606 B2Mitsubishi Chemical Corporation
- Organic electroluminescent device16 Jan 2018US 9,871,213 B2Merck Patent GmbH
- Organic electroluminescent device and boric acid and borinic acid derivatives used therein2 Aug 2016US 9,403,849 B2Merck Patent GmbH
- Reagents for labeling biomolecules31 Aug 2023US 2023/0272221 A1Ultima Genomics, Inc.
- Assistant dyes for color conversion in lcd displays24 Jun 2021US 2021/0191198 A1Moleculed Ltd.
- Composition for organic electroluminescent element, organic electroluminescent element, display and lighting3 May 2018US 2018/0123054 A1Mitsubishi Chemical Corporation
- Organic electroluminescent device3 Nov 2016US 2016/0322570 A1Merck Patent GmbH
- Anthracene derivative and organic electroluminescent element using same23 Jun 2016US 2016/0181542 A1Idemitsu Kosan Co., Ltd.
Most cited
By later US patents
- Dichroic light polarizers162US 6,049,428 AOptiva, Inc. · 2000
- Benzanthracene derivatives for organic electroluminescent devices33US 8,986,852 B2Merck Patent GmbH · 2015
- Dyes of improved optical brightness and/or fluorescence and compositions containing them19US 7,705,144 B22010
- Free amine-containing polymeric dyes18US 4,339,237 ADynapol · 1982
- Water-soluble amine-linked polymeric colorants12US 4,144,252 ADynapol · 1979