C09B 55/00
Azomethine dyes
C09B55/00 (Azomethine dyes) appears on 344 US grants and 198 published applications in this corpus.
Search patents in C09B- Granted patents
- 344
- Published applications
- 198
- Assignees
- 120
- Inventors
- 688
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 16 | 0 |
| 1978 | 13 | 0 |
| 1979 | 8 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 4 | 0 |
| 1996 | 10 | 0 |
| 1997 | 7 | 0 |
| 1998 | 9 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 6 |
| 2002 | 3 | 4 |
| 2003 | 5 | 4 |
| 2004 | 6 | 7 |
| 2005 | 1 | 12 |
| 2006 | 4 | 8 |
| 2007 | 3 | 6 |
| 2008 | 8 | 11 |
| 2009 | 10 | 6 |
| 2010 | 6 | 9 |
| 2011 | 6 | 14 |
| 2012 | 9 | 8 |
| 2013 | 9 | 8 |
| 2014 | 9 | 9 |
| 2015 | 6 | 16 |
| 2016 | 9 | 5 |
| 2017 | 10 | 9 |
| 2018 | 2 | 7 |
| 2019 | 8 | 8 |
| 2020 | 5 | 13 |
| 2021 | 9 | 7 |
| 2022 | 11 | 9 |
| 2023 | 2 | 8 |
| 2024 | 7 | 2 |
| 2025 | 1 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Unsymmetrical squaraine dyes and applications thereof2 Jun 2026US 12,646,657 B2Council of Scientific and Industrial Research
- Coloring composition, film, optical filter, solid-state imaging element and image display device27 Jan 2026US 12,535,732 B2FUJIFILM Corporation
- Coloring composition, film, optical filter, solid-state imaging element, image display device, and compound20 Jan 2026US 12,529,969 B2FUJIFILM Corporation
- Polycyclic compound3 Jun 2025US 12,319,661 B2Eutec New Materials Technology (Suzhou) Co., Ltd.
- Compound, ink, resist composition for color filter, color filter, sheet for thermal transfer recording, and toner24 Sep 2024US 12,098,288 B2Canon Kabushiki Kaisha
- Transparent photovoltaic devices including vacuum deposited photoactive metal and metalloid complexes derived from diketopyrrolopyrrole4 Sep 2025US 2025/0280731 A1Ubiquitous Energy, Inc.
- C.i. pigment yellow 101, method for producing the same, and coloring composition containing c.i. pigment yellow 10127 Mar 2025US 2025/0101232 A1FUJIFILM Business Innovation Corp.
- Fluorescent compound and fluorescently labeled biological substance using the same4 Apr 2024US 2024/0110918 A1FUJIFILM Corporation
- Fluorescent dyes21 Mar 2024US 2024/0093034 A1Exopharm Limited
- Compounds and compositions for tumor detection and surgical guidance28 Sep 2023US 2023/0302159 A1
Most cited
By later US patents
- Oxime ester photoinitiators263US 7,759,043 B2Ciba Specialty Chemicals Corporation · 2010
- Photochromic lens129US 4,756,973 AKureha Kagaku Kogyo Kabushiki Kaisha · 1988
- Cure-indicating molding and coating composition83US 5,583,178 AMinnesota Mining and Manufacturing Company · 1996
- Method of forming color image comprising heterocyclic magenta dye-forming coupler72US 4,540,654 AFuji Photo Film Co., Ltd. · 1985
- Inkless reimageable printing paper and method35US 7,582,398 B2Xerox Corporation · 2009