C09K 19/0225
Ferroelectric
Official title: {Ferroelectric}
C09K19/0225 (Ferroelectric) appears on 234 US grants and 86 published applications in this corpus.
Search patents in C09K- Granted patents
- 234
- Published applications
- 86
- Assignees
- 103
- Inventors
- 450
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 17 | 0 |
| 1995 | 13 | 0 |
| 1996 | 17 | 0 |
| 1997 | 18 | 0 |
| 1998 | 10 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 12 | 1 |
| 2002 | 12 | 4 |
| 2003 | 5 | 0 |
| 2004 | 2 | 7 |
| 2005 | 2 | 8 |
| 2006 | 4 | 11 |
| 2007 | 8 | 6 |
| 2008 | 6 | 3 |
| 2009 | 7 | 3 |
| 2010 | 4 | 3 |
| 2011 | 6 | 2 |
| 2012 | 1 | 2 |
| 2013 | 3 | 6 |
| 2014 | 1 | 1 |
| 2015 | 5 | 5 |
| 2016 | 2 | 2 |
| 2017 | 5 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 2 | 8 |
| 2025 | 5 | 8 |
| 2026 | 5 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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 crystalline medium and electro-optical device16 Jun 2026US 12,655,350 B2Merck Patent GmbH
- Mixture including ferroelectric nematic phase and methods of forming and using same12 May 2026US 12,624,288 B2The Regents of the University of Colorado, a body corporate
- Ferroelectric nematic liquid crystalline medium7 Apr 2026US 12,595,414 B2Merck Patent GmbH
- Liquid crystal formulation for pixelated local dimming6 Jan 2026US 12,516,243 B2Meta Platforms Technologies, LLC
- Ferroelectric smectic liquid crystalline medium16 Oct 2025US 2025/0320408 A1Merck Patent GmbH
- Ferroelectric nematic liquid crystalline medium11 Sep 2025US 2025/0282995 A1Merck Patent GmbH
- Electro-mechanical converters using ferroelectric nematic material31 Jul 2025US 2025/0246949 A1Merck Patent GmbH
- Liquid crystalline medium and electro-optical device17 Jul 2025US 2025/0230359 A1Merck Patent GmbH
- Liquid crystal formulation for pixelated local dimming5 Jun 2025US 2025/0179363 A1Meta Platforms Technologies, LLC
Most cited
By later US patents
- Chiral smectic C or H liquid crystal electro-optical device483US 4,367,924 A1983
- Surface stabilized ferroelectric liquid crystal devices142US 4,563,059 A1986
- Polymer dispersed ferroelectric smectic liquid crystal formed by inducing a force during phase separation113US 5,530,566 AKent State University · 1996
- Biopolymer-based optical element93US 6,284,418 B1Cambridge Scientific, Inc. · 2001
- Active matrix displays having high contrast values56US 6,482,479 B1Clariant International Ltd. · 2002