C09K 19/3823
Containing heterocycles having at least one nitrogen as ring hetero atom
Official title: {containing heterocycles having at least one nitrogen as ring hetero atom}
C09K19/3823 (Containing heterocycles having at least one nitrogen as ring hetero atom) appears on 84 US grants and 39 published applications in this corpus.
Search patents in C09K- Granted patents
- 84
- Published applications
- 39
- Assignees
- 33
- Inventors
- 149
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 15 | 0 |
| 1994 | 10 | 0 |
| 1995 | 8 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 2 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 3 | 1 |
| 2016 | 1 | 6 |
| 2017 | 1 | 3 |
| 2018 | 2 | 6 |
| 2019 | 2 | 1 |
| 2020 | 2 | 3 |
| 2021 | 5 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 2 |
| 2024 | 4 | 2 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Composition, optically anisotropic layer, liquid crystal cell, liquid crystal display device, sensor, lens, switching element, isolator, and camera21 Apr 2026US 12,606,746 B2FUJIFILM Corporation
- Liquid crystal composition, liquid crystal cured layer, optical film, polarizing plate, and image display device2 Dec 2025US 12,486,458 B2FUJIFILM Corporation
- Polymerizable liquid crystal having a carbazole core18 Jun 2024US 12,012,382 B2Rolic Technologies AG
- Highly aromatic and liquid-crystalline co- polyimides endcapped with aromatic groups and crosslinked products therefrom7 May 2024US 11,976,231 B2The United States of America as represented by the Secretary of the Air Force
- Liquid crystal composition, liquid crystal cured layer, optical film, polarizing plate, and image display device19 Mar 2024US 11,932,796 B2FUJIFILM Corporation
- Composition, optically anisotropic layer, liquid crystal cell, liquid crystal display device, sensor, lens, switching element, isolator, and camera6 Feb 2025US 2025/0043183 A1FUJIFILM Corporation
- Liquid crystal composition, liquid crystal cured layer, optical film, polarizing plate, and image display device18 Jul 2024US 2024/0240086 A1FUJIFILM Corporation
- Highly aromatic and liquid-crystalline co-polyimides endcapped with aromatic groups and crosslinked products therefrom4 Apr 2024US 2024/0110098 A1Government of the United States as Represented by the Secretary of the Air Force
- Polymer compound, composition, and molded product23 Nov 2023US 2023/0374384 A1FUJIFILM Corporation
- Liquid crystal composition, liquid crystal cured layer, optical film, polarizing plate, and image display device27 Apr 2023US 2023/0130269 A1FUJIFILM Corporation
Most cited
By later US patents
- Liquid crystalline polymer compositions, process, and products117US 4,533,693 ASRI International · 1985
- Liquid crystalline polymer compositions, process, and products77US 4,533,692 ASRI International · 1985
- Liquid crystalline polymer compositions, process and products58US 4,703,103 ACommtech International · 1987
- Vinyl ester resins containing mesogenic/rigid rodlike moieties53US 4,962,163 AThe Dow Chemical Company · 1990
- Tailorable multi-layer printed wiring boards of controlled coefficient of thermal expansion43US 4,876,120 AGeneral Electric Company · 1989