C07F 9/505
Preparation
Official title: {Preparation; Separation; Purification; Stabilisation}
C07F9/505 (Preparation) appears on 235 US grants and 140 published applications in this corpus.
Search patents in C07F- Granted patents
- 235
- Published applications
- 140
- Assignees
- 152
- Inventors
- 539
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 16 | 0 |
| 1999 | 10 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 3 |
| 2002 | 7 | 6 |
| 2003 | 9 | 13 |
| 2004 | 5 | 9 |
| 2005 | 11 | 8 |
| 2006 | 2 | 5 |
| 2007 | 10 | 6 |
| 2008 | 1 | 4 |
| 2009 | 4 | 3 |
| 2010 | 3 | 4 |
| 2011 | 2 | 3 |
| 2012 | 1 | 2 |
| 2013 | 3 | 3 |
| 2014 | 4 | 8 |
| 2015 | 8 | 6 |
| 2016 | 8 | 10 |
| 2017 | 4 | 5 |
| 2018 | 2 | 8 |
| 2019 | 6 | 5 |
| 2020 | 8 | 6 |
| 2021 | 5 | 8 |
| 2022 | 7 | 4 |
| 2023 | 0 | 1 |
| 2024 | 2 | 4 |
| 2025 | 2 | 3 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07F 9/5063From compounds having the structure p-h or p-heteroatom, in which one or115
- C07F 9/509By reduction of pentavalent phosphorus derivatives44
- C07F 9/5054By a process in which the phosphorus atom is not involved31
- C07F 9/5095Separation24
- C07F 9/5059By addition of phosphorus compounds to alkenes or alkynes22
- C07F 9/5086From phosphonium salts as starting materials10
Recent patents
- Method for preparing sulfonated arylphosphine19 May 2026US 12,630,572 B2Hanwha Solutions Corporation
- Phosphorus-containing compound, manufacturing method thereof, resin composition, and article made therefrom31 Mar 2026US 12,590,109 B2Elite Electronic Material (Kunshan) Co., Ltd.
- Cyclopropane skeleton monophosphine ligands, palladium complexes thereof, preparation methods and application27 May 2025US 12,312,373 B2Nankai University
- Beta-phosphonyl-enamine derivative and preparation method therefor8 Apr 2025US 12,269,836 B2Soochow University
- Method for producing phosphorus chemicals from wet process phosphate28 May 2024US 11,993,623 B2Massachusetts Institute of Technology
- Design and synthesis of electron-rich phosphine ligands for selective, sustainable cross-coupling reactions1 Oct 2026US 2026/0295571 A1The Curators of the University of Missouri
- Reduction of triphenylphosphine oxide with specific catalyst16 Jul 2026US 2026/0200960 A1Dsm IP Assets B.V.
- Novel thiol reductant, method and use thereof29 Jan 2026US 2026/0027227 A1Suzhou Bioreinno Biotechnology Limited Company
- Diphosphine compounds and complexes3 Jul 2025US 2025/0215027 A1Cancer Research Technology Limited
- Method for preparing phosphine compound based on pyrophosphorous acid22 May 2025US 2025/0163085 A1Zhejiang Yangfan New materials Co., LTD
Most cited
By later US patents
- Metathesis syntheses of pheromones or their components65US 6,696,597 B2TillieChem, Inc. · 2004
- Impurity inhibition in olefin metathesis reactions57US 6,900,347 B2TillieChem, Inc. · 2005
- Hydrocarbon-substituted analogs of phosphine and arsine, particularly for metal organic chemical vapor deposition30US 4,734,514 AMorton Thiokol, Inc. · 1988
- Process for the preparation of sulfonated aryl phosphine25US 4,483,802 ARuhrchemie Aktiengesekkschaft · 1984
- Method for producing diphosphines and the use thereof22US 6,924,389 B2Oxeno Olefinchemie GmbH · 2005