C09K 19/34
Containing at least one heterocyclic ring
Official title: containing at least one heterocyclic ring
C09K19/34 (Containing at least one heterocyclic ring) appears on 2,186 US grants and 1,822 published applications in this corpus.
Search patents in C09K- Granted patents
- 2,186
- Published applications
- 1,822
- Assignees
- 332
- Inventors
- 2,607
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 18 | 0 |
| 1983 | 5 | 0 |
| 1984 | 9 | 0 |
| 1985 | 7 | 0 |
| 1986 | 17 | 0 |
| 1987 | 32 | 0 |
| 1988 | 33 | 0 |
| 1989 | 47 | 0 |
| 1990 | 36 | 0 |
| 1991 | 46 | 0 |
| 1992 | 51 | 0 |
| 1993 | 73 | 0 |
| 1994 | 64 | 0 |
| 1995 | 68 | 0 |
| 1996 | 47 | 0 |
| 1997 | 35 | 0 |
| 1998 | 50 | 0 |
| 1999 | 37 | 0 |
| 2000 | 28 | 0 |
| 2001 | 26 | 3 |
| 2002 | 25 | 27 |
| 2003 | 27 | 41 |
| 2004 | 39 | 40 |
| 2005 | 31 | 58 |
| 2006 | 40 | 44 |
| 2007 | 36 | 56 |
| 2008 | 41 | 53 |
| 2009 | 36 | 55 |
| 2010 | 53 | 74 |
| 2011 | 53 | 74 |
| 2012 | 57 | 49 |
| 2013 | 70 | 85 |
| 2014 | 58 | 75 |
| 2015 | 68 | 114 |
| 2016 | 96 | 146 |
| 2017 | 90 | 123 |
| 2018 | 79 | 151 |
| 2019 | 96 | 115 |
| 2020 | 96 | 97 |
| 2021 | 74 | 80 |
| 2022 | 71 | 64 |
| 2023 | 56 | 68 |
| 2024 | 63 | 42 |
| 2025 | 43 | 45 |
| 2026 | 48 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid crystal medium and electronic component6 Oct 2026US 12,753,345 B2Merck Patent GmbH
- Liquid crystal composition and display panel29 Sep 2026US 12,747,393 B2Tcl China Star Optoelectronics Technology Co., Ltd.
- All-aromatic liquid-crystalline homo-polyimides with aromatic endgroups and crosslinked products therefrom15 Sep 2026US 12,734,747 B2The United States of America as represented by the Secretary of the Air Force
- All-aromatic liquid-crystalline homo-polyimides with aromatic endgroups and crosslinked products therefrom15 Sep 2026US 12,734,748 B2The United States of America as represented by the Secretary of the Air Force
- Liquid-crystal medium15 Sep 2026US 12,735,641 B2Merck Patent GmbH
- Polymerizable liquid crystal composition8 Oct 2026US 2026/0308453 A1Rolic Technologies AG
- Method for producing cholesteric liquid crystal layer, cholesteric liquid crystal layer, liquid crystal composition, cured product, optically anisotropic body, and reflective layer1 Oct 2026US 2026/0299363 A1FUJIFILM Corporation
- Chiral photosensitive molecular switch, cholesteric liquid crystal composition, display panel and preparation method thereof24 Sep 2026US 2026/0286222 A1Beijing Boe Optoelectronics Technology Co., Ltd.
- Nonlinear Optical Chromophores Having Tetrahydrocarbazole Donor Groups, Lyotropic Compositions Containing the Same, and Methods of Poling Such Compositions24 Sep 2026US 2026/0286223 A1Lightwave Logic, Inc.
- Liquid crystal composition and use thereof17 Sep 2026US 2026/0275193 A1Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.
Most cited
By later US patents
- Trifluorobenzene derivative and liquid crystal composition containing the same83US 5,032,313 AChisso Corporation · 1991
- Novel liquid crystal mixtures79US 4,621,901 AHoffmann-La Roche Inc. · 1986
- Cyclohexane derivatives76US 4,510,069 AMerck Patent GmbH · 1985
- Nitrogen-containing heterocycles75US 4,834,904 AMerck Patent GmbH · 1989
- Polyhalogenoaromatic compounds for liquid crystal compositions73US 4,551,264 AMerck Patent GmbH · 1985