C09K 19/603
Anthroquinonic
Official title: {Anthroquinonic}
C09K19/603 (Anthroquinonic) appears on 119 US grants and 73 published applications in this corpus.
Search patents in C09K- Granted patents
- 119
- Published applications
- 73
- Assignees
- 53
- Inventors
- 253
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 10 | 0 |
| 1985 | 11 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 2 |
| 2005 | 2 | 5 |
| 2006 | 0 | 6 |
| 2007 | 2 | 5 |
| 2008 | 8 | 3 |
| 2009 | 2 | 3 |
| 2010 | 6 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 3 |
| 2017 | 1 | 7 |
| 2018 | 3 | 1 |
| 2019 | 3 | 2 |
| 2020 | 2 | 1 |
| 2021 | 3 | 3 |
| 2022 | 2 | 3 |
| 2023 | 0 | 6 |
| 2024 | 9 | 7 |
| 2025 | 5 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Anthraquinone compound, liquid crystal composition containing said compound, and dimming element26 May 2026US 12,637,421 B2Nippon Kayaku Kabushiki Kaisha
- Liquid crystal element and emulsion composition3 Feb 2026US 12,540,279 B2Mitsubishi Chemical Corporation
- One-way circularly polarized light generated by propagation through Ch-GLC films doped with light-absorbing dyes4 Nov 2025US 12,461,297 B2University of Rochester
- Liquid crystal element and emulsion composition21 Oct 2025US 12,448,570 B2Mitsubishi Chemical Corporation
- Liquid-crystal composition containing anthraquinone compound and light-modulating element5 Aug 2025US 12,378,474 B2Nippon Kayaku Kabushiki Kaisha
- Liquid crystal composition for radio wave control element, and radio wave control element21 May 2026US 2026/0142380 A1FUJIFILM Corporation
- Liquid crystal dimming device20 Nov 2025US 2025/0354062 A1Jiangsu Hecheng Display Technology Co., Ltd.
- Anthraquinone compound, liquid crystal composition containing said compound, and dimming element2 Oct 2025US 2025/0304531 A1Nippon Kayaku Kabushiki Kaisha
- Single-side peep-proof liquid-crystal display device14 Aug 2025US 2025/0258414 A1Jiangsu Hecheng Display Technology Co., Ltd.
- Liquid crystal element and emulsion composition7 Aug 2025US 2025/0250487 A1Mitsubishi Chemical Corporation
Most cited
By later US patents
- Ferroelectric liquid crystal compounds and liquid crystal compositions112US 4,576,732 AHitachi, Ltd. · 1986
- Electro-optical display element45US 3,960,751 AMatsushita Electric Industrial Co., Ltd. · 1976
- Liquid crystals having pleochroic dyes41US 4,363,743 ASiemens Aktiengesellschaft · 1982
- Photorecording element, method for production thereof, and the liquid crystal cell comprising the same41US 5,296,321 AAgency of Industrial Science and Technology · 1994
- Composition for liquid crystal color display elements38US 4,360,447 AMitsui Toatsu Chemicals, Inc. · 1982