B01J 31/0267
Phosphines or phosphonium compounds, i.e. phosphorus bonded to at least one carbon
Official title: {Phosphines or phosphonium compounds, i.e. phosphorus bonded to at least one carbon atom, including e.g. sp2-hybridised phosphorus compounds such as phosphabenzene, the other atoms bonded to phosphorus being either carbon or hydrogen}
B01J31/0267 (Phosphines or phosphonium compounds, i.e. phosphorus bonded to at least one carbon) appears on 329 US grants and 219 published applications in this corpus.
Search patents in B01J- Granted patents
- 329
- Published applications
- 219
- Assignees
- 196
- Inventors
- 774
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 10 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 8 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 23 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 16 | 4 |
| 2002 | 7 | 5 |
| 2003 | 9 | 11 |
| 2004 | 9 | 9 |
| 2005 | 5 | 7 |
| 2006 | 6 | 3 |
| 2007 | 3 | 10 |
| 2008 | 2 | 4 |
| 2009 | 2 | 6 |
| 2010 | 5 | 9 |
| 2011 | 6 | 9 |
| 2012 | 4 | 4 |
| 2013 | 4 | 13 |
| 2014 | 9 | 9 |
| 2015 | 6 | 8 |
| 2016 | 11 | 18 |
| 2017 | 11 | 6 |
| 2018 | 7 | 13 |
| 2019 | 9 | 12 |
| 2020 | 13 | 7 |
| 2021 | 5 | 15 |
| 2022 | 10 | 13 |
| 2023 | 8 | 7 |
| 2024 | 9 | 4 |
| 2025 | 4 | 6 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Spirocyclic compound containing catalyst for use in catalyzing reaction of epoxide compound and carbon dioxide5 May 2026US 12,616,964 B2Shenzhen Capchem Technology Co., Ltd.
- Non-metal catalyst for synthesizing polycarbonate by CO2 and preparation method therefor31 Mar 2026US 12,589,384 B2Wuhan Institute of Technology
- Sustainable aviation fuel from normal alpha olefin byproducts and process for same3 Feb 2026US 12,540,287 B2Chevron Phillips Chemical Company LP
- Sustainable jet fuel and process20 Jan 2026US 12,528,999 B2Chevron Phillips Chemical Company LP
- Three-dimensional organic sandwich chirality and its synthetic assembly23 Dec 2025US 12,503,481 B2Texas Tech University System
- 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.
- Spirocyclic compound containing catalyst for use in catalyzing reaction of epoxide compound and carbon dioxide6 Aug 2026US 2026/0225086 A1Shenzhen Capchem Technology Co., Ltd.
- Catalysts for solvolysis of polyester6 Aug 2026US 2026/0225087 A1Agency for Science, Technology and Research
- Alkoxylation processes using phosphorus and double metal cyanide catalysts23 Jul 2026US 2026/0208173 A1Dow Global Technologies LLC
- Low-odor phosphazene catalyst and use thereof30 Apr 2026US 2026/0115705 A1Changhua Chemical Technology Co., Ltd.
Most cited
By later US patents
- Phase transfer catalyzed preparation of aromatic polyether polymers113US 5,229,482 AGeneral Electric Company · 1993
- Perfluorinated amide salts and their uses as ionic conducting materials61US 6,319,428 B1Centre National De La Recherche Scientifique · 2001
- Non-aqueous liquid composition with an ionic character and its use as a solvent55US 5,104,840 AInstitut Francais du Petrole · 1992
- Process for preparing optically active compounds54US 6,184,381 B2Asahi Kasei Kogyo Kabushiki Kaisha · 2001
- Separation processes39US 5,952,530 AUnion Carbide Chemicals & Plastics Technology Corporation · 1999