C07F 9/5027
Polyphosphines
Official title: {Polyphosphines}
C07F9/5027 (Polyphosphines) appears on 315 US grants and 189 published applications in this corpus.
Search patents in C07F- Granted patents
- 315
- Published applications
- 189
- Assignees
- 146
- Inventors
- 683
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 16 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 16 | 0 |
| 1997 | 9 | 0 |
| 1998 | 19 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 3 |
| 2002 | 11 | 12 |
| 2003 | 17 | 16 |
| 2004 | 11 | 14 |
| 2005 | 9 | 14 |
| 2006 | 10 | 15 |
| 2007 | 13 | 7 |
| 2008 | 5 | 10 |
| 2009 | 12 | 9 |
| 2010 | 4 | 9 |
| 2011 | 4 | 7 |
| 2012 | 3 | 0 |
| 2013 | 4 | 8 |
| 2014 | 8 | 9 |
| 2015 | 9 | 4 |
| 2016 | 6 | 5 |
| 2017 | 5 | 4 |
| 2018 | 4 | 2 |
| 2019 | 5 | 8 |
| 2020 | 5 | 1 |
| 2021 | 1 | 9 |
| 2022 | 8 | 9 |
| 2023 | 1 | 1 |
| 2024 | 3 | 6 |
| 2025 | 4 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High-affinity Cu(I) ligands and methods of use thereof19 May 2026US 12,630,573 B2Georgia Tech Research Corporation
- Organometallic compound, composition including same, organic light-emitting device, and electronic apparatus17 Feb 2026US 12,557,544 B2Samsung Electronics Co., Ltd.
- Pharmaceutical composition comprising tetrofosmin and pharmaceutically acceptable salts thereof14 Oct 2025US 12,440,583 B2Jubilant Draximage Inc.
- Ligands for production of 1-octene in chromium assisted ethylene oligomerization process14 Oct 2025US 12,440,830 B2Sabic Global Technologies B.V.
- Cycloheptatriene molybdenum (0) precursors for deposition of molybdenum films16 Sep 2025US 12,416,076 B2APPLIED Materials.Inc.
- Ligand Compound, Organic Chromium Compound, and Catalyst Compositions Containing the Same3 Sep 2026US 2026/0257213 A1LG Chem.Ltd.
- Phosphine-phenol half-metallocene complex, and preparation method therefor and use thereof14 May 2026US 2026/0132161 A1China Petroleum & Chemical Corporation
- Phosphine-phenol transition metal complex, preparation method therefor, and use thereof30 Apr 2026US 2026/0116900 A1China Petroleum & Chemical Corporation
- 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
- Ligands for metals and improved metal-catalyzed processes based thereon143US 6,307,087 B1Massachusetts Institute of Technology · 2001
- Liquid absorbent solutions for separating nitrogen from natural gas103US 6,136,222 ABend Research, Inc. · 2000
- Polymerization of carbon monoxide/olefin with P ligand having polar aryl group101US 4,843,144 AShell Oil Company · 1989
- Ethylene trimerization100US 5,811,618 AAmoco Corporation · 1998
- Ligands for metals and improved metal-catalyzed processes based thereon100US 6,395,916 B1Massachusetts Institute of Technology · 2002