C09K 19/3059
In which at least two rings are linked by a carbon chain
Official title: {in which at least two rings are linked by a carbon chain containing carbon to carbon triple bonds}
C09K19/3059 (In which at least two rings are linked by a carbon chain) appears on 177 US grants and 158 published applications in this corpus.
Search patents in C09K- Granted patents
- 177
- Published applications
- 158
- Assignees
- 51
- Inventors
- 418
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 4 |
| 2005 | 3 | 4 |
| 2006 | 3 | 2 |
| 2007 | 2 | 2 |
| 2008 | 3 | 2 |
| 2009 | 0 | 1 |
| 2010 | 3 | 10 |
| 2011 | 2 | 2 |
| 2012 | 4 | 2 |
| 2013 | 3 | 1 |
| 2014 | 3 | 6 |
| 2015 | 4 | 10 |
| 2016 | 6 | 10 |
| 2017 | 9 | 9 |
| 2018 | 4 | 16 |
| 2019 | 9 | 14 |
| 2020 | 10 | 10 |
| 2021 | 8 | 9 |
| 2022 | 11 | 6 |
| 2023 | 11 | 16 |
| 2024 | 10 | 8 |
| 2025 | 8 | 6 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid crystalline compound, liquid crystal composition, and element16 Jun 2026US 12,655,351 B2Jnc Corporation
- Aromatic isothiocyanates7 Apr 2026US 12,595,415 B2Merck Patent GmbH
- Liquid crystal medium20 Jan 2026US 12,528,988 B2Merck Patent GmbH
- Liquid crystal composition and element9 Dec 2025US 12,492,342 B2Jnc Corporation
- Liquid crystal compound, liquid crystal composition thereof, and liquid crystal display device4 Nov 2025US 12,460,133 B2Jiangsu Hecheng Display Technology Co., Ltd.
- Liquid crystal composition and light modulating device thereof13 Aug 2026US 2026/0234471 A1TD Electrooptic Films (TDEF) Inc.
- Liquid-crystalline medium6 Aug 2026US 2026/0226350 A1Merck Patent GmbH
- Liquid crystalline compound, liquid crystal composition, and element11 Jun 2026US 2026/0159758 A1Jnc Corporation
- Liquid crystal medium and electronic component14 May 2026US 2026/0132337 A1Merck Patent GmbH
- Liquid crystalline medium29 Jan 2026US 2026/0028530 A1Merck Patent GmbH
Most cited
By later US patents
- Electrooptical system53US 5,356,557 AMerck Patent GmbH · 1994
- Crosslinked cyclohexane derivatives, and liquid-crystalline medium39US 6,203,724 B1Merck Patent GmbH · 2001
- Polymerisable liquid crystalline compounds22US 6,395,351 B1Rolic AG · 2002
- Tolan derivative and a liquid crystal mixture containing the same19US 4,778,620 AChisso Corporation · 1988
- Ethyne derivatives as a component of liquid crystal phases19US 5,068,053 AMerck Patent GmbH · 1991