C07D 295/037
With quaternary ring nitrogen atoms
Official title: with quaternary ring nitrogen atoms
C07D295/037 (With quaternary ring nitrogen atoms) appears on 99 US grants and 124 published applications in this corpus.
Search patents in C07D- Granted patents
- 99
- Published applications
- 124
- Assignees
- 85
- Inventors
- 285
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 5 |
| 2006 | 1 | 3 |
| 2007 | 2 | 3 |
| 2008 | 0 | 4 |
| 2009 | 2 | 5 |
| 2010 | 1 | 2 |
| 2011 | 2 | 5 |
| 2012 | 4 | 3 |
| 2013 | 2 | 3 |
| 2014 | 3 | 6 |
| 2015 | 6 | 14 |
| 2016 | 4 | 6 |
| 2017 | 8 | 6 |
| 2018 | 4 | 12 |
| 2019 | 7 | 3 |
| 2020 | 9 | 5 |
| 2021 | 4 | 6 |
| 2022 | 1 | 8 |
| 2023 | 8 | 5 |
| 2024 | 4 | 5 |
| 2025 | 3 | 4 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cannabinoid sulfate esters, their salts and uses thereof16 Jun 2026US 12,655,094 B2London Pharmaceuticals and Research Corporation
- Method of preparing ionic fluids21 Oct 2025US 12,448,351 B2Tetra Technologies, Inc.
- All-solid secondary battery and method of preparing the same30 Sep 2025US 12,431,539 B2Samsung Electronics Co., Ltd.
- Low melting point ionic liquids for infra-red liquid lens design20 May 2025US 12,306,373 B2Corning Incorporated
- Charged ion channel blockers and methods for use10 Dec 2024US 12,162,851 B2Nocion Therapeutics, Inc.
- Cationic Polymers And Methods Of Making Same, And Uses Thereof13 Aug 2026US 2026/0233214 A1Carnegie Mellon University
- Compositions and methods for t cell targeted delivery of therapeutic agents and activation of t cells21 May 2026US 2026/0137630 A1
- Method of preparing ionic fluids14 May 2026US 2026/0132107 A1Tetra Technologies, Inc.
- Carbon dioxide absorbent containing ionic material containing cyclic ammonium cation and hydroxide anion, and carbon dioxide separation method using the same23 Apr 2026US 2026/0108843 A1SK Innovation Co., Ltd.
- Charged Ion Channel Blockers and Methods for Use21 Aug 2025US 2025/0263386 A1Nocion Therapeutics, Inc.
Most cited
By later US patents
- Quaternary amine containing ether or ester lipid derivatives and therapeutic compositions103US 5,614,548 AWake Forest University · 1997
- Lipophilic quaternary ammonium salicylates, their use in cosmetics and in dermopharmacy38US 5,001,156 AL'oreal · 1991
- Thermal- and photoinitiated radical polymerization in the presence of an addition fragmentation agent15US 6,576,684 B1Ciba Specialty Chemicals Corporation · 2003
- Zeolite SSZ-5211US 6,254,849 B1Chevron U.S.A.Inc. · 2001
- Fluoride ion battery electrolyte compositions11US 9,331,360 B2California Institute of Technology · 2016