B01J 31/0261
Comprising phosphonous acid groups or the isomeric phosphinic acid groups , i.e.
Official title: {comprising phosphonous acid (-ester) groups (RP(OR')2) or the isomeric phosphinic acid (-ester) groups (R2(R'O)P=O), i.e. R= C, R'= C, H}
B01J31/0261 (Comprising phosphonous acid groups or the isomeric phosphinic acid groups , i.e.) appears on 26 US grants and 11 published applications in this corpus.
Search patents in B01J- Granted patents
- 26
- Published applications
- 11
- Assignees
- 14
- Inventors
- 67
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 2 |
| 2022 | 2 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 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 producing epoxyalkane, and solid oxidation catalyst9 Jul 2024US 12,030,860 B2Kao Corporation
- Process and formulation for producing a polyamide having low caprolactam concentration and specific relative viscosity26 Dec 2023US 11,851,563 B2Ascend Performance Materials Operations LLC
- Method for producing epoxyalkane and solid oxidation catalyst8 Nov 2022US 11,492,336 B2Kao Corporation
- Process and formulation for producing a polyamide having low caprolactam concentration and specific relative viscosity31 May 2022US 11,345,815 B2Ascend Performance Materials Operations LLC
- Process and formulation for producing a polyamide having low caprolactam concentration and specific relative viscosity13 Oct 2022US 2022/0325101 A1Ascend Performance Materials Operations LLC
- Method of producing acrylonitrile dimer29 Sep 2022US 2022/0306571 A1LG Chem.Ltd.
- Method for producing epoxyalkane, and solid oxidation catalyst14 Oct 2021US 2021/0317098 A1Kao Corporation
- Method for producing epoxyalkane and solid oxidation catalyst7 Oct 2021US 2021/0309625 A1Kao Corporation
- Process and formulation for producing a polyamide having low caprolactam concentration and specific relative viscosity27 Feb 2020US 2020/0062958 A1Ascend Performance Materials Operations LLC
Most cited
By later US patents
- Esterification catalysts and processes therefor and therewith42US 6,166,170 AE. I. Du Pont de Nemours and Company · 2000
- Titanium-containing catalyst composition and processes therefor and therewith31US 6,080,834 AE. I. Du Pont de Nemours and Company · 2000
- 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
- Solid acid catalyst13US 6,383,970 B1Kao Corporation · 2002
- Dimerization process12US 4,126,632 AImperial Chemical Industries PLC · 1978