C09K 19/408
Polysiloxanes
Official title: {Polysiloxanes}
C09K19/408 (Polysiloxanes) appears on 176 US grants and 62 published applications in this corpus.
Search patents in C09K- Granted patents
- 176
- Published applications
- 62
- Assignees
- 100
- Inventors
- 406
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 11 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 11 | 0 |
| 1996 | 12 | 0 |
| 1997 | 12 | 0 |
| 1998 | 10 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 6 |
| 2004 | 4 | 0 |
| 2005 | 0 | 6 |
| 2006 | 3 | 0 |
| 2007 | 2 | 6 |
| 2008 | 4 | 1 |
| 2009 | 3 | 6 |
| 2010 | 6 | 2 |
| 2011 | 4 | 3 |
| 2012 | 2 | 2 |
| 2013 | 2 | 3 |
| 2014 | 0 | 0 |
| 2015 | 3 | 4 |
| 2016 | 3 | 1 |
| 2017 | 1 | 3 |
| 2018 | 2 | 3 |
| 2019 | 3 | 3 |
| 2020 | 1 | 3 |
| 2021 | 3 | 4 |
| 2022 | 3 | 1 |
| 2023 | 1 | 4 |
| 2024 | 3 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mesogen compounds9 Dec 2025US 12,492,343 B2Transitions Optical, Inc.
- Anisotropic light absorption film and laminate10 Sep 2024US 12,085,742 B2FUJIFILM Corporation
- Dielectric copolymer materials4 Jun 2024US 11,999,893 B2Merck Patent GmbH
- Liquid crystal emulsification method and liquid crystal emulsion30 Jan 2024US 11,884,865 B2Wacker Chemie AG
- Electro-responsive ionic liquid crystal elastomer14 Nov 2023US 11,814,562 B2Kent State University
- Composition, optically anisotropic film, and compound2 Apr 2026US 2026/0092215 A1FUJIFILM Corporation
- Liquid Crystalline Polymer Composition having a Low Dielectric Constant21 Dec 2023US 2023/0407181 A1Ticona LLC
- Mesogen Compounds21 Sep 2023US 2023/0295514 A1Transitions Optical, Inc.
- Siloxane-based liquid crystalline elastomers with dynamic covalent bonds3 Aug 2023US 2023/0242714 A1Cambridge Enterprise Limited
- Actuator comprising an innervated liquid crystal elastomer16 Feb 2023US 2023/0049026 A1
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
- Crosslinked organopolysiloxanes having liquid-crystalline properties66US 4,388,453 AConsortium fur Elektrochemische · 1983