C09K 19/10
Containing at least two benzene rings
Official title: containing at least two benzene rings
C09K19/10 (Containing at least two benzene rings) appears on 2,533 US grants and 2,245 published applications in this corpus.
Search patents in C09K- Granted patents
- 2,533
- Published applications
- 2,245
- Assignees
- 462
- Inventors
- 3,148
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 23 | 0 |
| 1978 | 18 | 0 |
| 1979 | 13 | 0 |
| 1980 | 15 | 0 |
| 1981 | 10 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 9 | 0 |
| 1985 | 13 | 0 |
| 1986 | 24 | 0 |
| 1987 | 33 | 0 |
| 1988 | 24 | 0 |
| 1989 | 49 | 0 |
| 1990 | 39 | 0 |
| 1991 | 50 | 0 |
| 1992 | 55 | 0 |
| 1993 | 69 | 0 |
| 1994 | 56 | 0 |
| 1995 | 42 | 0 |
| 1996 | 28 | 0 |
| 1997 | 29 | 0 |
| 1998 | 42 | 0 |
| 1999 | 39 | 0 |
| 2000 | 27 | 0 |
| 2001 | 33 | 9 |
| 2002 | 27 | 34 |
| 2003 | 42 | 36 |
| 2004 | 38 | 45 |
| 2005 | 20 | 37 |
| 2006 | 40 | 48 |
| 2007 | 29 | 51 |
| 2008 | 39 | 64 |
| 2009 | 44 | 78 |
| 2010 | 79 | 98 |
| 2011 | 64 | 87 |
| 2012 | 66 | 85 |
| 2013 | 99 | 110 |
| 2014 | 62 | 125 |
| 2015 | 126 | 189 |
| 2016 | 127 | 197 |
| 2017 | 127 | 151 |
| 2018 | 116 | 178 |
| 2019 | 117 | 153 |
| 2020 | 105 | 112 |
| 2021 | 88 | 86 |
| 2022 | 89 | 54 |
| 2023 | 62 | 81 |
| 2024 | 60 | 46 |
| 2025 | 49 | 47 |
| 2026 | 40 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 19/20Linked by a chain containing carbon and oxygen atoms as chain links1,436
- C09K 19/12At least two benzene rings directly linked1,330
- C09K 19/14Linked by a carbon chain525
- C09K 19/24Linked by a chain containing nitrogen-to-nitrogen bonds133
- C09K 19/22Linked by a chain containing carbon and nitrogen atoms as chain links131
- C09K 19/28Linked by a chain containing carbon and sulfur atoms as chain links45
Recent patents
- Liquid crystal medium and electronic component6 Oct 2026US 12,753,345 B2Merck Patent GmbH
- Liquid crystal compounds29 Sep 2026US 12,747,392 B2Rolic Technologies AG
- Liquid crystal composition and display panel29 Sep 2026US 12,747,393 B2Tcl China Star Optoelectronics Technology Co., Ltd.
- Polymerisable liquid crystal material and polymerised liquid crystal film21 Jul 2026US 12,686,820 B2Merck Patent GmbH
- Twist-bend nematic liquid crystal (LC) dimer-based material and use thereof, and LC-based cholesteric heliconical (CH) material and use thereof21 Jul 2026US 12,686,821 B2East China University of Science and Technology
- Chiral reactive mesogen mixture24 Sep 2026US 2026/0286221 A1Merck Patent GmbH
- Liquid crystal composition and use thereof17 Sep 2026US 2026/0275193 A1Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.
- Compound, and Preparation Method and Use Thereof10 Sep 2026US 2026/0265606 A1Huawei Technologies Co., Ltd.
- Composite10 Sep 2026US 2026/0265608 A1University of Leeds
- Light control sheet and vehicle window27 Aug 2026US 2026/0250576 A1Toppan Holdings Inc.
Most cited
By later US patents
- Liquid crystal composition and liquid crystal display device182US 8,361,569 B2Jnc Corporation · 2013
- Process of preparing compositions having multiple oriented mesogens149US 5,073,294 AHercules Incorporated · 1991
- Difluorobenzonitrile derivatives136US 5,211,878 AMerck Patent GmbH · 1993
- Smectic liquid crystals132US 4,613,209 AAT&T Bell Laboratories · 1986
- Liquid crystal materials and devices130US 3,947,375 ASecretary of State for Defence in Her Britannic Majesty's Govt. of U.K. of Gt. Britain and Northern Ireland · 1976