C09K 19/24
Linked by a chain containing nitrogen-to-nitrogen bonds
Official title: linked by a chain containing nitrogen-to-nitrogen bonds
C09K19/24 (Linked by a chain containing nitrogen-to-nitrogen bonds) appears on 133 US grants and 114 published applications in this corpus.
Search patents in C09K- Granted patents
- 133
- Published applications
- 114
- Assignees
- 77
- Inventors
- 374
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 5 |
| 2010 | 3 | 4 |
| 2011 | 3 | 5 |
| 2012 | 3 | 7 |
| 2013 | 7 | 8 |
| 2014 | 5 | 5 |
| 2015 | 7 | 6 |
| 2016 | 7 | 5 |
| 2017 | 2 | 7 |
| 2018 | 5 | 15 |
| 2019 | 6 | 7 |
| 2020 | 11 | 10 |
| 2021 | 6 | 7 |
| 2022 | 8 | 3 |
| 2023 | 8 | 4 |
| 2024 | 5 | 4 |
| 2025 | 5 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compound, liquid crystal composition, as well as liquid crystal display element, sensor, liquid crystal lens, optical communication equipment, and antenna each using the same2 Dec 2025US 12,486,457 B2DIC Corporation
- Compound, liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication device, and antenna using liquid crystal composition18 Nov 2025US 12,473,492 B2DIC Corporation
- Organic solid crystals having helical structures formed using cholesteric liquid crystals22 Apr 2025US 12,282,222 B1Meta Platforms Technologies, LLC
- Dye compound-containing liquid crystal composition and device including the same4 Feb 2025US 12,215,268 B2DIC Corporation
- Ferroelectric nematic composition and device thereof7 Jan 2025US 12,187,945 B1Polaris Electro-Optics, Inc.
- Innovative photomobile polymer, method for preparing said photomobile polymer without rubbing, 3d printing method of said photomobile polymer and 3d printer to implement said 3d printing method20 Aug 2026US 2026/0241637 A1Consiglio Nazionale Delle Ricerche
- Radio wave control element30 Jul 2026US 2026/0218051 A1FUJIFILM Corporation
- Compound, liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication equipment, and antenna using same11 Dec 2025US 2025/0377570 A1DIC Corporation
- Structures for physical unclonable function using spontaneous chiral symmetry breaking and method of preparing the same2 Jan 2025US 2025/0002787 A1
- Compound, liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication device, and antenna using liquid crystal composition10 Oct 2024US 2024/0336843 A1DIC Corporation
Most cited
By later US patents
- Smectic liquid crystals132US 4,613,209 AAT&T Bell Laboratories · 1986
- Optical modulation display device and display method using the same99US 5,155,607 AFuji Xerox Co., Ltd. · 1992
- Liquid crystal device and driving method therefor51US 4,681,404 ACanon Kabushiki Kaisha · 1987
- Mesogenic materials with anomalous birefringence dispersion and high second order susceptibility (X.sup.(2)).47US 6,139,771 ADisplaytech, Inc. · 2000
- Electro-optical materials and light modulator devices containing same44US 5,061,404 AAllied-Signal Inc. · 1991