B01J 31/0262
Comprising phosphinous acid groups or the isomeric phosphine oxide groups , i.e.
Official title: {comprising phosphinous acid (-ester) groups (R2P(OR')) or the isomeric phosphine oxide groups (R3P=O) , i.e. R= C, R'= C, H}
B01J31/0262 (Comprising phosphinous acid groups or the isomeric phosphine oxide groups , i.e.) appears on 26 US grants and 4 published applications in this corpus.
Search patents in B01J- Granted patents
- 26
- Published applications
- 4
- Assignees
- 14
- Inventors
- 48
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 3 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of producing acrylonitrile dimer2 Sep 2025US 12,404,234 B2LG Chem.Ltd.
- Method for preparing acrylonitrile dimer22 Jul 2025US 12,365,647 B2LG Chem.Ltd.
- Selective hydrogenation catalyst and methods of making and using same6 Dec 2016US 9,511,359 B2Chevron Phillips Chemical Company LP
- Titanium-containing catalyst composition and processes therefor and therewith3 Jul 2001US 6,255,441 B1E. I. Du Pont de Nemours and Company
- Polymerization of cyclic ethers using selected metal compound catalysts24 Jun 1997US 5,641,853 AE. I. Du Pont de Nemours and Company
- Method of preparing acrylonitrile dimer10 Nov 2022US 2022/0356149 A1LG Chem.Ltd.
- Method of producing acrylonitrile dimer29 Sep 2022US 2022/0306571 A1LG Chem.Ltd.
- Method for preparing acrylonitrile dimer30 Jun 2022US 2022/0204440 A1LG Chem.Ltd.
- Selective Hydrogenation Catalyst and Methods of Making and Using Same19 May 2016US 2016/0136630 A1Chevron Phillips Chemical Company LP
Most cited
By later US patents
- Catalytic condensation of isocyanates and carboxylic acids or anhydrides24US 4,156,065 AThe Upjohn Company · 1979
- High molecular weight, insoluble carbodiimidization catalysts18US 4,067,820 ABayer Aktiengesellschaft · 1978
- Phosphonite-and phosphinite-promoted ruthenium - cobalt catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers14US 4,895,818 ASun Refining and Marketing Company · 1990
- Dimerization process12US 4,126,632 AImperial Chemical Industries PLC · 1978
- Phosphonite-and phosphonite-promoted ruthenium - cobalt catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers12US 4,895,987 ASun Refining and Marketing Company · 1990