C09K 19/40
Containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen or sulfur
Official title: containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen or sulfur, e.g. silicon, metals
C09K19/40 (Containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen or sulfur) appears on 422 US grants and 224 published applications in this corpus.
Search patents in C09K- Granted patents
- 422
- Published applications
- 224
- Assignees
- 193
- Inventors
- 868
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 13 | 0 |
| 1990 | 13 | 0 |
| 1991 | 9 | 0 |
| 1992 | 6 | 0 |
| 1993 | 20 | 0 |
| 1994 | 14 | 0 |
| 1995 | 18 | 0 |
| 1996 | 32 | 0 |
| 1997 | 28 | 0 |
| 1998 | 20 | 0 |
| 1999 | 13 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 2 |
| 2002 | 9 | 4 |
| 2003 | 3 | 11 |
| 2004 | 9 | 2 |
| 2005 | 2 | 15 |
| 2006 | 8 | 10 |
| 2007 | 5 | 17 |
| 2008 | 13 | 11 |
| 2009 | 8 | 12 |
| 2010 | 17 | 21 |
| 2011 | 13 | 14 |
| 2012 | 15 | 11 |
| 2013 | 15 | 7 |
| 2014 | 9 | 11 |
| 2015 | 10 | 9 |
| 2016 | 8 | 3 |
| 2017 | 5 | 10 |
| 2018 | 5 | 4 |
| 2019 | 6 | 11 |
| 2020 | 3 | 9 |
| 2021 | 9 | 9 |
| 2022 | 6 | 3 |
| 2023 | 7 | 7 |
| 2024 | 6 | 2 |
| 2025 | 5 | 5 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nonlinear optical chromophores having tetrahydrocarbazole donor groups, lyotropic compositions containing the same, and methods of poling such compositions30 Jun 2026US 12,668,743 B2Lightwave Logic, Inc.
- Methods for controlling the phase of self-assembled ionic liquid crystal (ILC) structures2 Jun 2026US 12,644,051 B2Tokyo Electron Limited
- Liquid crystal composition and liquid crystal element24 Feb 2026US 12,559,680 B2Kyushu Nanotec Optics Co., Ltd.
- Mesogen compounds9 Dec 2025US 12,492,343 B2Transitions Optical, Inc.
- Liquid crystalline polymer composition and molded article produced therefrom21 Oct 2025US 12,448,569 B2Lotte Chemical Corporation
- 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.
- Composition, optically anisotropic layer, cured film, and diffraction element30 Apr 2026US 2026/0117126 A1FUJIFILM Corporation
- Composition, optically anisotropic film, and compound2 Apr 2026US 2026/0092215 A1FUJIFILM Corporation
- Liquid crystal composition, optically anisotropic layer, cured film, diffraction element, and compound26 Mar 2026US 2026/0085242 A1FUJIFILM Corporation
- Methods for controlling the phase of self-assembled ionic liquid crystal (ilc) structures4 Dec 2025US 2025/0368898 A1Tokyo Electron Limited
Most cited
By later US patents
- Head-up display system where polarized light from a display impinges on a glass plate containing twisted nematic liquid crystal at the plate's Brewsters angle129US 5,510,913 ACentral Glass Company, Limited · 1996
- Pigments whose color depends on the viewing angle, their preparation and use78US 5,362,315 AConsortium fur Elektrochemische Industrie GmbH · 1994
- Liquid-crystalline polyorganosiloxanes containing (meth) acryloxy groups74US 5,211,877 AConsortium fur Elektrochemische Industrie GmbH · 1993
- Shape memory main-chain smectic-C elastomers69US 7,799,243 B2University of Connecticut · 2010
- Polymer stabilized liquid crystals and flexible devices thereof67US 6,049,366 ASniaricerche S.c.p.A · 2000