C08G 73/0694
With only two nitrogen atoms in the ring
Official title: {with only two nitrogen atoms in the ring, e.g. polyquinoxalines}
C08G73/0694 (With only two nitrogen atoms in the ring) appears on 138 US grants and 83 published applications in this corpus.
Search patents in C08G- Granted patents
- 138
- Published applications
- 83
- Assignees
- 88
- Inventors
- 286
- Latest grant
- 26 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 3 | 3 |
| 2003 | 4 | 2 |
| 2004 | 2 | 3 |
| 2005 | 5 | 2 |
| 2006 | 1 | 5 |
| 2007 | 1 | 8 |
| 2008 | 0 | 2 |
| 2009 | 3 | 2 |
| 2010 | 8 | 2 |
| 2011 | 3 | 8 |
| 2012 | 2 | 5 |
| 2013 | 5 | 7 |
| 2014 | 4 | 1 |
| 2015 | 7 | 5 |
| 2016 | 1 | 7 |
| 2017 | 3 | 2 |
| 2018 | 5 | 2 |
| 2019 | 4 | 2 |
| 2020 | 2 | 2 |
| 2021 | 0 | 1 |
| 2022 | 2 | 3 |
| 2023 | 3 | 2 |
| 2024 | 0 | 3 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Cationic nitrogen-containing heterocycles and their application in wellbore stability26 Dec 2023US 11,851,604 B2Saudi Arabian Oil Company
- Phenazine copolymers and uses thereof4 Jul 2023US 11,692,065 B2Cornell University
- Photoalignment composition for the stabilization of the pre-tilt angle in liquid crystal layers24 Jan 2023US 11,561,440 B2Rolic Technologies AG
- Cationic nitrogen-containing heterocycles and their application in wellbore stability30 Aug 2022US 11,427,743 B2Saudi Arabian Oil Company
- Tröger's base-linked poly(crown ethers)s8 Mar 2022US 11,267,939 B2King Abdulaziz City for Science and Technology (KACST)
- Poly(tetramethylene oxide)-based segmented ionenes block copolymers with aliphatic or dabco hard segments10 Apr 2025US 2025/0115716 A1
- Optical recording medium, method for recording information, and method for reading information13 Feb 2025US 2025/0054516 A1Panasonic Intellectual Property Management Co., Ltd.
- Photoactive material26 Sep 2024US 2024/0318072 A1Sumitomo Chemical Company, Limited
- Photoactive material14 Mar 2024US 2024/0083915 A1Sumitomo Chemical Company, Limited
- Linear polymers comprising dibenzocyclooctene-based moieties having tunable coefficients of thermal expansion1 Feb 2024US 2024/0034837 A1National Technology & Engineering Solutions of Sandia, LLC
Most cited
By later US patents
- Radiation-sensitive mixture and use thereof61US 5,087,550 ABASF SE · 1992
- Radiation-sensitive mixture and use thereof57US 5,284,734 ABASF SE · 1994
- Heat-resistant heterocyclic polymers and methods for producing same50US 4,347,348 A1982
- Electroluminescent polymer compositions and processes thereof26US 5,879,821 AXerox Corporation · 1999
- Liquid crystal orientation controlling film and liquid crystal device using the same22US 4,735,492 AHitachi Chemical Company, Ltd. · 1988