C07F 9/46
Phosphinous acids [r2poh], [r2ph]: thiophosphinous acids including[r2psh]
Official title: Phosphinous acids [R2POH], [R2P(= O)H]: Thiophosphinous acids {including[R2PSH]; [R2P(=S)H]; Aminophosphines [R2PNH2]; Derivatives thereof}
C07F9/46 (Phosphinous acids [r2poh], [r2ph]: thiophosphinous acids including[r2psh]) appears on 177 US grants and 136 published applications in this corpus.
Search patents in C07F- Granted patents
- 177
- Published applications
- 136
- Assignees
- 92
- Inventors
- 467
- Latest grant
- 27 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 9 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 11 | 0 |
| 1999 | 2 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 7 |
| 2003 | 6 | 4 |
| 2004 | 3 | 7 |
| 2005 | 3 | 4 |
| 2006 | 4 | 5 |
| 2007 | 1 | 3 |
| 2008 | 7 | 5 |
| 2009 | 1 | 3 |
| 2010 | 4 | 9 |
| 2011 | 4 | 7 |
| 2012 | 4 | 4 |
| 2013 | 6 | 6 |
| 2014 | 7 | 4 |
| 2015 | 4 | 6 |
| 2016 | 4 | 12 |
| 2017 | 13 | 10 |
| 2018 | 5 | 4 |
| 2019 | 12 | 11 |
| 2020 | 7 | 3 |
| 2021 | 3 | 3 |
| 2022 | 1 | 1 |
| 2023 | 2 | 3 |
| 2024 | 0 | 3 |
| 2025 | 1 | 10 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lithium conducting carbon phosphonitrides from substituted cyanophosphine27 May 2025US 12,312,374 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Substituted cyanophosphine additives for lithium conducting carbon phosphonitrides10 Oct 2023US 11,780,860 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Efficient phosphorous stabilizers based on diphenylamine and heterocyclic diphenylamine derivatives25 Apr 2023US 11,634,560 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Organic electroluminescence device and silicon-containing compound for organic electroluminescence device22 Mar 2022US 11,283,031 B2Samsung Display Co., Ltd.
- Bisphosphine ligand compound, chromium compound, ethylene oligomerization catalyst system, and ethylene oligomer preparation method19 Oct 2021US 11,148,127 B2Ajou University Industry-Academic Cooperation Foundation
- Surface active organic alkali agents1 Oct 2026US 2026/0297420 A1Ultimate Eor Services LLC
- Ligand Compound, Organic Chromium Compound, and Catalyst Composition Including the Same30 Oct 2025US 2025/0333427 A1LG Chem.Ltd.
- Catalyst for synthesizing polyimide and preparation method and application thereof23 Oct 2025US 2025/0325968 A1BYD Company Limited
- Method of preparing alkyl phosphate compound based on micro-reaction system22 May 2025US 2025/0163084 A1Fudan University
- Catalyst for Synthesizing Polyimide and Preparation Method Therefor, and Polyimide Compound3 Apr 2025US 2025/0109248 A1BYD Company Limited
Most cited
By later US patents
- Acylphosphine oxide compounds their preparation and use115US 4,298,738 ABASF SE · 1981
- Acylphosphine oxide compounds113US 4,324,744 ABASF SE · 1982
- Improved process for recovery of purified terephthalic acid108US 5,175,355 AAmoco Corporation · 1992
- Photocurable compositions with acylphosphine oxide photoinitiator94US 4,710,523 ABASF SE · 1987
- Method of making a relief plate using a photopolymerizable recording composition86US 4,385,109 ABASF SE · 1983