C07C 209/12
With formation of quaternary ammonium compounds
Official title: with formation of quaternary ammonium compounds
C07C209/12 (With formation of quaternary ammonium compounds) appears on 51 US grants and 33 published applications in this corpus.
Search patents in C07C- Granted patents
- 51
- Published applications
- 33
- Assignees
- 34
- Inventors
- 113
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 9 |
| 2014 | 0 | 2 |
| 2015 | 7 | 1 |
| 2016 | 7 | 8 |
| 2017 | 7 | 2 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 1 |
| 2023 | 2 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Therapy19 May 2026US 12,629,382 B2Vestlandets Innovasjonsselskap AS
- Processes for regeneration of organocations14 Jan 2025US 12,195,372 B2Toxsorb Ltd.
- Quaternary ammonium salt and preparation method and use thereof as inhibitor, and water-based drilling fluid and use thereof5 Dec 2023US 11,834,387 B1Jingzhou Jiahua Technology Co., Ltd.
- Quaternary ammonium salts for corrosion inhibition25 Apr 2023US 11,634,623 B2Hindustan Petroleum Corporation Limited
- Fatty amides and derivatives from natural oil metathesis18 Jun 2019US 10,322,994 B2Stepan Company
- Quaternary ammonium salts and methods of making thereof25 Dec 2025US 2025/0388528 A1Bio Protectant Technologies, Inc.
- Method of synthesis25 Jan 2024US 2024/0025839 A1University of Durham
- Therapy17 Nov 2022US 2022/0362265 A1Vestlandets Innovasjonsselskap AS
- Quaternary ammonium salts for corrosion inhibition3 Jun 2021US 2021/0163812 A1Hindustan Petroleum Corporation Limited
- Processes for regeneration of organocations7 Jan 2021US 2021/0002153 A1Toxsorb Ltd.
Most cited
By later US patents
- Quaternary ammonium compounds with high flash points and method of making the same30US 5,545,749 AHuntington Laboratories, Inc. · 1996
- Process for making high solids fabric softeners using low amounts of solvents and no side reactions21US 5,223,628 ASherex Chemical Company, Inc. · 1993
- Process for producing quarternary ammonium compounds12US 5,696,292 ARheox, Inc. · 1997
- Process for making high solids fabric softeners using low amounts of solvents and eliminating side reactions11US 5,284,650 ASherex Chemical Company, Inc. · 1994
- Method of preparing quarternary ammonium formulations with high flash points11US 5,414,124 AHuntington Laboratories, Inc. · 1995