C09K 19/00
Liquid crystal materials
C09K19/00 (Liquid crystal materials) appears on 7,676 US grants and 5,559 published applications in this corpus.
Search patents in C09K- Granted patents
- 7,676
- Published applications
- 5,559
- Assignees
- 1,281
- Inventors
- 8,498
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 69 | 0 |
| 1977 | 54 | 0 |
| 1978 | 46 | 0 |
| 1979 | 33 | 0 |
| 1980 | 38 | 0 |
| 1981 | 37 | 0 |
| 1982 | 50 | 0 |
| 1983 | 54 | 0 |
| 1984 | 74 | 0 |
| 1985 | 66 | 0 |
| 1986 | 98 | 0 |
| 1987 | 114 | 0 |
| 1988 | 127 | 0 |
| 1989 | 178 | 0 |
| 1990 | 157 | 0 |
| 1991 | 170 | 0 |
| 1992 | 190 | 0 |
| 1993 | 240 | 0 |
| 1994 | 225 | 0 |
| 1995 | 199 | 0 |
| 1996 | 170 | 0 |
| 1997 | 168 | 0 |
| 1998 | 197 | 0 |
| 1999 | 153 | 0 |
| 2000 | 160 | 0 |
| 2001 | 150 | 31 |
| 2002 | 124 | 141 |
| 2003 | 154 | 168 |
| 2004 | 163 | 198 |
| 2005 | 111 | 210 |
| 2006 | 154 | 199 |
| 2007 | 126 | 195 |
| 2008 | 151 | 195 |
| 2009 | 157 | 195 |
| 2010 | 218 | 263 |
| 2011 | 181 | 234 |
| 2012 | 177 | 247 |
| 2013 | 243 | 255 |
| 2014 | 178 | 239 |
| 2015 | 233 | 342 |
| 2016 | 251 | 349 |
| 2017 | 234 | 299 |
| 2018 | 232 | 311 |
| 2019 | 223 | 308 |
| 2020 | 225 | 247 |
| 2021 | 204 | 222 |
| 2022 | 181 | 163 |
| 2023 | 161 | 191 |
| 2024 | 150 | 139 |
| 2025 | 131 | 130 |
| 2026 | 97 | 88 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 19/04Liquid crystal materials: characterised by the chemical structure of the liquid crystal6,148
- C09K 19/52Liquid crystal materials: characterised by components which are not liquid crystals3,029
- C09K 19/02Liquid crystal materials: characterised by optical, electrical or physical properties of the945
Recent patents
- Liquid crystal medium and electronic component6 Oct 2026US 12,753,345 B2Merck Patent GmbH
- Liquid crystal scaffolds and use thereof for organoid, spheroid, and 3D cellaggregate manufacturing6 Oct 2026US 12,753,393 B2The Regents of the University of California
- Composite materials based on ferroelectric nematic liquid crystals and devices including same29 Sep 2026US 12,747,391 B2The Regents of the University of Colorado, a body corporate
- 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.
- Resin composition, film, metal-clad laminate, and circuit board8 Oct 2026US 2026/0308452 A1Kuraray Co., Ltd.
- Polymerizable liquid crystal composition8 Oct 2026US 2026/0308453 A1Rolic Technologies AG
- Polymer dispersed liquid crystal film and method of producing the same1 Oct 2026US 2026/0299348 A1Nitto Denko Corporation
- 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 reactive mesogen mixture24 Sep 2026US 2026/0286221 A1Merck Patent GmbH
Most cited
By later US patents
- Chiral smectic C or H liquid crystal electro-optical device483US 4,367,924 A1983
- Light modulating material comprising a liquid crystal dispersion in a plastic matrix449US 4,688,900 AKent State University · 1987
- Encapsulated liquid crystal and method389US 4,435,047 AManchester R & D Partnership · 1984
- Liquid crystalline-plastic material having submillisecond switch times and extended memory276US 4,671,618 A1987
- Liquid crystalline light modulating device and material273US 5,437,811 AKent State University · 1995