C09K 19/3001
Cyclohexane rings
Official title: {Cyclohexane rings}
C09K19/3001 (Cyclohexane rings) appears on 2,153 US grants and 1,870 published applications in this corpus.
Search patents in C09K- Granted patents
- 2,153
- Published applications
- 1,870
- Assignees
- 289
- Inventors
- 2,171
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 10 | 0 |
| 1983 | 14 | 0 |
| 1984 | 20 | 0 |
| 1985 | 25 | 0 |
| 1986 | 25 | 0 |
| 1987 | 35 | 0 |
| 1988 | 22 | 0 |
| 1989 | 37 | 0 |
| 1990 | 24 | 0 |
| 1991 | 32 | 0 |
| 1992 | 37 | 0 |
| 1993 | 47 | 0 |
| 1994 | 40 | 0 |
| 1995 | 42 | 0 |
| 1996 | 27 | 0 |
| 1997 | 24 | 0 |
| 1998 | 46 | 0 |
| 1999 | 40 | 0 |
| 2000 | 46 | 0 |
| 2001 | 39 | 7 |
| 2002 | 34 | 34 |
| 2003 | 40 | 37 |
| 2004 | 39 | 46 |
| 2005 | 30 | 34 |
| 2006 | 36 | 32 |
| 2007 | 25 | 38 |
| 2008 | 31 | 57 |
| 2009 | 36 | 57 |
| 2010 | 66 | 76 |
| 2011 | 56 | 83 |
| 2012 | 57 | 61 |
| 2013 | 78 | 86 |
| 2014 | 52 | 85 |
| 2015 | 89 | 154 |
| 2016 | 108 | 179 |
| 2017 | 103 | 153 |
| 2018 | 100 | 148 |
| 2019 | 112 | 139 |
| 2020 | 92 | 95 |
| 2021 | 87 | 65 |
| 2022 | 71 | 52 |
| 2023 | 47 | 57 |
| 2024 | 46 | 27 |
| 2025 | 32 | 41 |
| 2026 | 34 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 19/3003Compounds containing at least two rings in which the different rings are1,410
- C09K 19/3066In which the rings are linked by a chain containing carbon and1,066
- C09K 19/3028In which at least two rings are linked by a carbon chain436
- C09K 19/3059In which at least two rings are linked by a carbon chain177
- C09K 19/3048In which at least two rings are linked by a carbon chain139
- C09K 2019/3095In which the end group is the monoterpene menthylIndexing code35
- C09K 19/3086In which at least two rings are linked by a chain containing26
- C09K 19/3087In which at least two rings are linked by a chain containing13
Recent patents
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- Liquid crystal aligning agent, liquid crystal alignment film and liquid crystal display element28 Jul 2026US 12,692,440 B2Nissan Chemical Corporation
- Liquid crystal device14 Jul 2026US 12,680,024 B2Merck Patent GmbH
- Liquid crystal composition and use thereof17 Sep 2026US 2026/0275193 A1Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.
- Light control sheet and vehicle window27 Aug 2026US 2026/0250576 A1Toppan Holdings Inc.
- Liquid crystalline medium and compounds20 Aug 2026US 2026/0242665 A1Merck Patent GmbH
- Polymerizable liquid crystal formulations20 Aug 2026US 2026/0242666 A1Merck Patent GmbH
- Liquid crystal composition and light modulating device thereof13 Aug 2026US 2026/0234471 A1TD Electrooptic Films (TDEF) Inc.
Most cited
By later US patents
- Liquid crystal composition and liquid crystal display device182US 8,361,569 B2Jnc Corporation · 2013
- Difluorobenzonitrile derivatives136US 5,211,878 AMerck Patent GmbH · 1993
- Liquid crystalline cyclohexane derivatives95US 4,130,502 AMerck Patent Gesellschaft mit · 1978
- Liquid crystalline cyclohexane derivatives95US 4,229,315 AMerck Patent GmbH · 1980
- Liquid crystalline compounds and mixtures thereof90US 4,596,667 AChisso Corporation · 1986