B01J 31/0255
Phosphorus containing compounds
Official title: {Phosphorus containing compounds}
B01J31/0255 (Phosphorus containing compounds) appears on 527 US grants and 379 published applications in this corpus.
Search patents in B01J- Granted patents
- 527
- Published applications
- 379
- Assignees
- 293
- Inventors
- 1,252
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 10 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 9 | 0 |
| 1982 | 14 | 0 |
| 1983 | 8 | 0 |
| 1984 | 7 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 8 | 0 |
| 1993 | 7 | 0 |
| 1994 | 11 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 12 | 0 |
| 1998 | 28 | 0 |
| 1999 | 12 | 0 |
| 2000 | 11 | 0 |
| 2001 | 17 | 5 |
| 2002 | 17 | 13 |
| 2003 | 13 | 16 |
| 2004 | 9 | 10 |
| 2005 | 10 | 14 |
| 2006 | 9 | 6 |
| 2007 | 5 | 13 |
| 2008 | 3 | 6 |
| 2009 | 6 | 10 |
| 2010 | 8 | 18 |
| 2011 | 8 | 18 |
| 2012 | 7 | 8 |
| 2013 | 11 | 18 |
| 2014 | 15 | 18 |
| 2015 | 13 | 15 |
| 2016 | 14 | 24 |
| 2017 | 15 | 15 |
| 2018 | 15 | 27 |
| 2019 | 19 | 22 |
| 2020 | 24 | 14 |
| 2021 | 8 | 24 |
| 2022 | 21 | 28 |
| 2023 | 14 | 11 |
| 2024 | 15 | 10 |
| 2025 | 12 | 8 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for the asymmetric synthesis of isopiperitenol9 Jun 2026US 12,649,705 B2Studiengesellschaft Kohle gGmbH
- 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.
- Method for the preparation of 1,2-propanediol21 Apr 2026US 12,606,507 B2Evonik Operations GmbH
- 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
- 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
- Titanium-containing catalyst composition and processes therefor and therewith46US 6,066,714 AE. I. Du Pont de Nemours and Company · 2000