C07F 9/54
Quaternary phosphonium compounds
C07F9/54 (Quaternary phosphonium compounds) appears on 1,038 US grants and 556 published applications in this corpus.
Search patents in C07F- Granted patents
- 1,038
- Published applications
- 556
- Assignees
- 451
- Inventors
- 1,745
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 67 | 0 |
| 1977 | 55 | 0 |
| 1978 | 109 | 0 |
| 1979 | 55 | 0 |
| 1980 | 44 | 0 |
| 1981 | 36 | 0 |
| 1982 | 39 | 0 |
| 1983 | 26 | 0 |
| 1984 | 17 | 0 |
| 1985 | 21 | 0 |
| 1986 | 12 | 0 |
| 1987 | 10 | 0 |
| 1988 | 11 | 0 |
| 1989 | 4 | 0 |
| 1990 | 13 | 0 |
| 1991 | 11 | 0 |
| 1992 | 9 | 0 |
| 1993 | 9 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 6 | 0 |
| 1997 | 12 | 0 |
| 1998 | 17 | 0 |
| 1999 | 9 | 0 |
| 2000 | 11 | 0 |
| 2001 | 11 | 2 |
| 2002 | 11 | 9 |
| 2003 | 7 | 19 |
| 2004 | 16 | 28 |
| 2005 | 9 | 14 |
| 2006 | 11 | 21 |
| 2007 | 12 | 20 |
| 2008 | 10 | 32 |
| 2009 | 13 | 35 |
| 2010 | 29 | 20 |
| 2011 | 15 | 24 |
| 2012 | 14 | 18 |
| 2013 | 15 | 18 |
| 2014 | 18 | 26 |
| 2015 | 30 | 32 |
| 2016 | 27 | 37 |
| 2017 | 20 | 19 |
| 2018 | 25 | 17 |
| 2019 | 14 | 25 |
| 2020 | 17 | 11 |
| 2021 | 19 | 31 |
| 2022 | 8 | 25 |
| 2023 | 19 | 21 |
| 2024 | 24 | 18 |
| 2025 | 15 | 18 |
| 2026 | 6 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07F 9/5407Acyclic saturated phosphonium compounds437
- C07F 9/5442Aromatic phosphonium compounds244
- C07F 9/5456Arylalkanephosphonium compounds174
- C07F 9/5428Acyclic unsaturated phosphonium compounds107
- C07F 9/5435Cycloaliphatic phosphonium compounds55
- C07F 9/5449Polyphosphonium compounds54
- C07F 9/5463Compounds of the type "quasi-phosphonium"29
Recent patents
- Mitochondria-targeted atovagone: a more potent and more effective antitumor, antimicrobial, and antimalarial drug7 Apr 2026US 12,594,283 B2Aix-Marseille Universite
- Mitochondria-targeted isoketal/isolevuglandin scavengers and uses thereof3 Mar 2026US 12,564,580 B2Vanderbilt University
- Compounds for inhibiting neovascularization factors and use thereof10 Feb 2026US 12,545,695 B2Smartin Bio Inc.
- Method of producing L-glufosinate27 Jan 2026US 12,534,482 B2Cj Cheiljedang Corporation
- Ylide-functionalised phosphanes for use in metal complexes and homogeneous catalysis13 Jan 2026US 12,521,704 B2Umicore AG & Co. KG
- Immobilized quaternary phosphonium salt having phenol domain, method for producing same, and cyclic carbonate production method using same17 Sep 2026US 2026/0274874 A1Shin-Etsu Chemical Co., Ltd.
- Compound and antistatic agent containing the same as active component27 Aug 2026US 2026/0250306 A1Nippon Chemical Industrial Co., Ltd.
- Photobases13 Aug 2026US 2026/0234174 A1Technische UniversitäT Wien
- Catalysts for solvolysis of polyester6 Aug 2026US 2026/0225087 A1Agency for Science, Technology and Research
- Antimicrobial conjugated oligoelectrolytes and methods thereof30 Jul 2026US 2026/0215432 A1National University of Singapore
Most cited
By later US patents
- Stilbene derivatives222US 4,326,055 AHoffmann-La Roche Inc. · 1982
- Method of preparing a controlled-release pharmaceutical preparation, and resulting composition201US 4,145,410 A1979
- Tris(pentafluorophenyl)borane complexes and catalysts derived therefrom183US 5,296,433 AMinnesota Mining and Manufacturing Company · 1994
- Insecticides158US 4,024,163 ANational Research Development Corporation · 1977
- Anionically modified organophilic clays and their preparation103US 4,434,075 ANL Industries, Inc. · 1984