C09K 2219/00
Aspects relating to the form of the liquid crystal [lc] material, or
Official title: Aspects relating to the form of the liquid crystal [LC] material, or by the technical area in which LC material are used
C09K2219/00 (Aspects relating to the form of the liquid crystal [lc] material, or) appears on 420 US grants and 569 published applications in this corpus.
Search patents in C09K- Granted patents
- 420
- Published applications
- 569
- Assignees
- 190
- Inventors
- 1,121
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 0 | 1 |
| 2003 | 4 | 4 |
| 2004 | 2 | 20 |
| 2005 | 5 | 10 |
| 2006 | 7 | 20 |
| 2007 | 9 | 16 |
| 2008 | 9 | 16 |
| 2009 | 13 | 13 |
| 2010 | 15 | 17 |
| 2011 | 9 | 17 |
| 2012 | 14 | 24 |
| 2013 | 10 | 11 |
| 2014 | 15 | 30 |
| 2015 | 18 | 24 |
| 2016 | 17 | 36 |
| 2017 | 28 | 35 |
| 2018 | 22 | 41 |
| 2019 | 20 | 47 |
| 2020 | 35 | 27 |
| 2021 | 25 | 36 |
| 2022 | 21 | 28 |
| 2023 | 32 | 32 |
| 2024 | 26 | 24 |
| 2025 | 22 | 21 |
| 2026 | 19 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 2219/03In the form of filmsIndexing code259
- C09K 2219/11Used in the high frequency technical fieldIndexing code71
- C09K 2219/13Used in the technical field of thermotropic switchesIndexing code44
- C09K 2219/17Used as a medium, in which detection of chemical compounds takes placeIndexing code12
- C09K 2219/15Used as a medium, in which chemical reactions take placeIndexing code8
- C09K 2219/01In the form of fibresIndexing code7
Recent patents
- Optical laminate, polarizing plate, and image device display15 Sep 2026US 12,736,729 B2FUJIFILM Corporation
- Polymerizable liquid crystal material and polymerized liquid crystal film8 Sep 2026US 12,729,341 B2Merck Patent GmbH
- Liquid-crystalline medium4 Aug 2026US 12,698,444 B2Merck Patent GmbH
- Method of manufacture of a resin26 May 2026US 12,637,618 B2Massachusetts Institute of Technology
- Cholesteric liquid crystal film and manufacturing method thereof12 May 2026US 12,624,292 B2FUJIFILM Corporation
- Chiral reactive mesogen mixture24 Sep 2026US 2026/0286221 A1Merck Patent GmbH
- Robotic liquid crystal elastomers, apparatus, and method of manufacture10 Sep 2026US 2026/0265607 A1Massachusetts Institute of Technology
- Polymerizable liquid crystal formulations20 Aug 2026US 2026/0242666 A1Merck Patent GmbH
- Color Semi-Transparent Partially Erasable Electronic Writing Film with Code Points and Use Thereof13 Aug 2026US 2026/0235916 A1
- Radio wave control element30 Jul 2026US 2026/0218051 A1FUJIFILM Corporation
Most cited
By later US patents
- Solidified liquid crystals of cellulose with optically variable properties178US 5,629,055 APulp and Paper Research Institute of Canada · 1997
- Chiral dopants104US 6,217,792 B1Merck Patent GmbH · 2001
- Cholesteric liquid crystal formulations and time/temperature monitoring means101US 4,859,360 ABiosynergy, Inc. · 1989
- Biopolymer-based optical element93US 6,284,418 B1Cambridge Scientific, Inc. · 2001
- Identification and authentication using liquid crystal material markings44US 8,734,679 B2Sicpa Holding SA · 2014