C09B 48/00
Quinacridones
C09B48/00 (Quinacridones) appears on 164 US grants and 96 published applications in this corpus.
Search patents in C09B- Granted patents
- 164
- Published applications
- 96
- Assignees
- 52
- Inventors
- 261
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 13 | 0 |
| 1999 | 5 | 0 |
| 2000 | 12 | 0 |
| 2001 | 11 | 4 |
| 2002 | 9 | 5 |
| 2003 | 1 | 0 |
| 2004 | 0 | 7 |
| 2005 | 4 | 5 |
| 2006 | 2 | 2 |
| 2007 | 3 | 4 |
| 2008 | 3 | 9 |
| 2009 | 4 | 3 |
| 2010 | 2 | 2 |
| 2011 | 2 | 0 |
| 2012 | 3 | 1 |
| 2013 | 2 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 4 |
| 2017 | 4 | 9 |
| 2018 | 3 | 4 |
| 2019 | 7 | 5 |
| 2020 | 6 | 6 |
| 2021 | 2 | 7 |
| 2022 | 5 | 3 |
| 2023 | 3 | 3 |
| 2024 | 3 | 3 |
| 2025 | 1 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Inkjet ink and inkjet recording device14 Jul 2026US 12,679,986 B2KYOCERA Document Solutions Inc.
- Pigment composition, coloring agent, and inkjet ink17 Mar 2026US 12,577,420 B2DIC Corporation
- Photoelectric conversion film, photoelectric conversion element and electronic device28 Jan 2025US 12,213,375 B2Sony Semiconductor Solutions Corporation
- Solid solution of quinacridone and ink composition containing same1 Oct 2024US 12,104,063 B2DIC Corporation
- Method for producing quinacridone solid-solution pigment, pigment dispersion, and ink-jet ink12 Mar 2024US 11,926,741 B2Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- A composition for dyeing a substrate and use thereof13 Aug 2026US 2026/0234426 A1Staedtler SE
- Quinacridone compound4 Jun 2026US 2026/0152637 A1DIC Corporation
- Pigment composition, colorant, and liquid ink9 Oct 2025US 2025/0313700 A1DIC Corporation
- Aqueous ink, ink cartridge and ink jet recording method26 Jun 2025US 2025/0206972 A1Canon Kabushiki Kaisha
- Inkjet ink and inkjet recording device12 Jun 2025US 2025/0188299 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Fluorescent carbamate-modified phthalocyanine pigments46US 5,811,543 ACiba Speciality Chemicals Corporation · 1998
- Pigment compositions41US 4,310,359 AToyo Ink Manufacturing Co., Ltd. · 1982
- Photoelectric material using organic photosensitising dyes and manufacturing method thereof41US 6,043,428 ASharp Kabushiki Kaisha · 2000
- Light-emitting material for organo-electroluminescence device and for organic electroluminescence device which the material is applied37US 6,280,859 B1Toyo Ink Manufacturing Co., Ltd. · 2001
- Fluorinated dyes or colorants and their uses36US 7,390,901 B2SiPix Imaging, Inc. · 2008