C09K 19/16
The chain containing carbon-to-carbon double bonds
Official title: the chain containing carbon-to-carbon double bonds, e.g. stilbenes
C09K19/16 (The chain containing carbon-to-carbon double bonds) appears on 106 US grants and 120 published applications in this corpus.
Search patents in C09K- Granted patents
- 106
- Published applications
- 120
- Assignees
- 54
- Inventors
- 271
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 1 |
| 2002 | 0 | 1 |
| 2003 | 2 | 0 |
| 2004 | 1 | 3 |
| 2005 | 0 | 4 |
| 2006 | 3 | 6 |
| 2007 | 1 | 1 |
| 2008 | 5 | 5 |
| 2009 | 2 | 6 |
| 2010 | 6 | 3 |
| 2011 | 4 | 3 |
| 2012 | 3 | 6 |
| 2013 | 4 | 5 |
| 2014 | 0 | 9 |
| 2015 | 8 | 4 |
| 2016 | 5 | 5 |
| 2017 | 6 | 11 |
| 2018 | 2 | 6 |
| 2019 | 11 | 11 |
| 2020 | 2 | 8 |
| 2021 | 7 | 3 |
| 2022 | 5 | 3 |
| 2023 | 2 | 4 |
| 2024 | 2 | 6 |
| 2025 | 6 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid crystal medium20 Jan 2026US 12,528,988 B2Merck Patent GmbH
- Compound, liquid crystal composition, as well as liquid crystal display element, sensor, liquid crystal lens, optical communication equipment, and antenna each using the same2 Dec 2025US 12,486,457 B2DIC Corporation
- Compound, liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication device, and antenna using liquid crystal composition18 Nov 2025US 12,473,492 B2DIC Corporation
- Heteroaromatic isothiocyanates15 Jul 2025US 12,359,128 B2Merck Patent GmbH
- Optical component25 Mar 2025US 12,258,509 B2Merck Patent GmbH
- Liquid crystal composition for radio wave control element, and radio wave control element21 May 2026US 2026/0142380 A1FUJIFILM Corporation
- Display device including a touch insulation layer and a reflection adjustment layer, electronic device, and method for manufacturing a display device29 Jan 2026US 2026/0033220 A1Samsung Display Co., Ltd.
- Compound, liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication equipment, and antenna using same11 Dec 2025US 2025/0377570 A1DIC Corporation
- Liquid crystal dimming device20 Nov 2025US 2025/0354062 A1Jiangsu Hecheng Display Technology Co., Ltd.
- Liquid crystal medium15 May 2025US 2025/0154412 A1Merck Patent GmbH
Most cited
By later US patents
- Components for high-frequency technology41US 7,361,288 B2Merck Patent Gesellschaft Mit Besschrankter haftung · 2008
- Substituted phenyl trifluoromethyl ethers21US 5,324,449 AMerck Patent GmbH · 1994
- Liquid crystal mixtures20US 4,122,026 ABBC Brown, Boveri & Company, Limited · 1978
- Fluorinated liquid crystal compounds and liquid crystal medium containing same16US 5,536,442 AMerck Patent GmbH · 1996
- Process for the preparation of ring compounds15US 7,183,447 B2Merck Patent GmbH · 2007