C09K 19/3842
Polyvinyl derivatives
Official title: {Polyvinyl derivatives}
C09K19/3842 (Polyvinyl derivatives) appears on 470 US grants and 425 published applications in this corpus.
Search patents in C09K- Granted patents
- 470
- Published applications
- 425
- Assignees
- 171
- Inventors
- 1,023
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 16 | 0 |
| 1990 | 15 | 0 |
| 1991 | 13 | 0 |
| 1992 | 11 | 0 |
| 1993 | 17 | 0 |
| 1994 | 11 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 14 | 0 |
| 1998 | 11 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 1 |
| 2002 | 6 | 9 |
| 2003 | 9 | 9 |
| 2004 | 11 | 8 |
| 2005 | 4 | 11 |
| 2006 | 9 | 17 |
| 2007 | 6 | 23 |
| 2008 | 15 | 18 |
| 2009 | 12 | 15 |
| 2010 | 20 | 16 |
| 2011 | 14 | 12 |
| 2012 | 8 | 5 |
| 2013 | 7 | 2 |
| 2014 | 7 | 12 |
| 2015 | 7 | 13 |
| 2016 | 5 | 12 |
| 2017 | 8 | 27 |
| 2018 | 10 | 23 |
| 2019 | 20 | 25 |
| 2020 | 15 | 38 |
| 2021 | 20 | 28 |
| 2022 | 23 | 34 |
| 2023 | 25 | 28 |
| 2024 | 27 | 13 |
| 2025 | 11 | 12 |
| 2026 | 12 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polymerizable liquid crystal material and polymerized liquid crystal film8 Sep 2026US 12,729,341 B2Merck Patent GmbH
- Three-dimensional helical-artificial-fibrous-muscle structured tubular soft actuator, manufacturing method therefor and application thereof1 Sep 2026US 12,723,197 B2Westlake University
- Optical film, optical laminate, and image display device30 Jun 2026US 12,668,744 B2FUJIFILM Corporation
- Polymerizable liquid crystal composition, optically anisotropic layer, optical film, polarizing plate, and image display device9 Jun 2026US 12,649,878 B2FUJIFILM Corporation
- Polymerizable liquid crystal material and polymerized liquid crystal film2 Jun 2026US 12,644,050 B2Merck Patent GmbH
- Liquid crystal composition and liquid crystal display device thereof17 Sep 2026US 2026/0275194 A1Jiangsu Hecheng Display Technology Co., Ltd.
- Reactive mesogens with high birefringence13 Aug 2026US 2026/0234472 A1Merck Patent GmbH
- Liquid crystal composition, cured product, film, and compound30 Jul 2026US 2026/0218052 A1FUJIFILM Corporation
- Cured film, optical film, and image display device16 Jul 2026US 2026/0202596 A1FUJIFILM Corporation
- Liquid crystal composition, light absorption anisotropic film, laminate, image display device, and polymer2 Jul 2026US 2026/0184994 A1FUJIFILM Corporation
Most cited
By later US patents
- Process for producing anisotropic liquid crystal layers on a substrate244US 5,247,377 ARohm GmbH Chemische Fabrik · 1993
- Unabsorbing type polarizer, method for manufacturing the same, polarized light source using the same, and apparatus for liquid crystal display using the same156US 5,157,526 AHitachi, Ltd. · 1992
- Process of preparing compositions having multiple oriented mesogens149US 5,073,294 AHercules Incorporated · 1991
- 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
- Liquid-crystalline polymer phase having a cholesteric structure, processes for its preparation and its use102US 4,293,435 ABASF SE · 1981