C09K 19/3028
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 single bonds}
C09K19/3028 (In which at least two rings are linked by a carbon chain) appears on 436 US grants and 377 published applications in this corpus.
Search patents in C09K- Granted patents
- 436
- Published applications
- 377
- Assignees
- 71
- Inventors
- 583
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 7 | 0 |
| 1987 | 8 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 12 | 0 |
| 1994 | 15 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 12 | 0 |
| 1999 | 12 | 0 |
| 2000 | 17 | 0 |
| 2001 | 11 | 1 |
| 2002 | 5 | 9 |
| 2003 | 8 | 7 |
| 2004 | 6 | 8 |
| 2005 | 6 | 10 |
| 2006 | 10 | 5 |
| 2007 | 3 | 4 |
| 2008 | 6 | 5 |
| 2009 | 3 | 7 |
| 2010 | 9 | 4 |
| 2011 | 5 | 25 |
| 2012 | 9 | 13 |
| 2013 | 22 | 24 |
| 2014 | 14 | 15 |
| 2015 | 22 | 28 |
| 2016 | 19 | 31 |
| 2017 | 15 | 21 |
| 2018 | 17 | 40 |
| 2019 | 28 | 24 |
| 2020 | 21 | 29 |
| 2021 | 15 | 16 |
| 2022 | 14 | 8 |
| 2023 | 9 | 14 |
| 2024 | 11 | 6 |
| 2025 | 6 | 16 |
| 2026 | 9 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 2019/3037Cy-cy-c2h4-phIndexing code79
- C09K 2019/3036Cy-c2h4-phIndexing code75
- C09K 2019/304Cy-c2h4-ph-phIndexing code41
- C09K 2019/303Cy-c2h4-cyIndexing code31
- C09K 2019/3042Cy-cy-c2h4-ph-phIndexing code25
- C09K 2019/3043Cy-cy-c2h4-ph-cyIndexing code11
- C09K 2019/3031Cy-cy-c2h4-cyIndexing code5
- C09K 2019/3033Cy-cy-cy-c2h4-cyIndexing code2
Recent patents
- Liquid-crystalline medium4 Aug 2026US 12,698,444 B2Merck Patent GmbH
- Liquid-crystalline medium12 May 2026US 12,624,289 B2Merck Patent GmbH
- Method for reducing white flicker12 May 2026US 12,624,290 B2Merck Patent GmbH
- Liquid crystal medium5 May 2026US 12,618,008 B2Merck Patent GmbH
- Liquid crystal composition and display panel28 Apr 2026US 12,612,552 B2Guangzhou China Star Optoelectronics Semiconductor Display Technology Co., LTd.
- Liquid-crystalline medium6 Aug 2026US 2026/0226350 A1Merck Patent GmbH
- Liquid-crystalline medium30 Jul 2026US 2026/0218049 A1Merck Patent GmbH
- Liquid crystal medium23 Jul 2026US 2026/0209603 A1Merck Patent GmbH
- Liquid crystal composition and liquid crystal display device16 Jul 2026US 2026/0201250 A1Jiangsu Hecheng Display Technology Co., Ltd.
- Liquid crystalline sam via spin-coat assembly and their area selective deposition properties25 Jun 2026US 2026/0176268 A1Merck Patent GmbH
Most cited
By later US patents
- Trifluorobenzene derivative and liquid crystal composition containing the same83US 5,032,313 AChisso Corporation · 1991
- Liquid crystalline cyclohexylphenyl derivatives74US 4,400,293 AMerck Patent GmbH · 1983
- Disubstituted ethanes61US 4,439,015 AHoffmann-La Roche Inc. · 1984
- Ethane derivatives53US 4,659,502 AMerck Patent GmbH · 1987
- Electrooptical system53US 5,356,557 AMerck Patent GmbH · 1994