B01J 31/2252
Sulfonate ligands
Official title: {Sulfonate ligands}
B01J31/2252 (Sulfonate ligands) appears on 39 US grants and 40 published applications in this corpus.
Search patents in B01J- Granted patents
- 39
- Published applications
- 40
- Assignees
- 49
- Inventors
- 141
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 1 | 4 |
| 2013 | 0 | 0 |
| 2014 | 5 | 1 |
| 2015 | 3 | 5 |
| 2016 | 3 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 6 |
| 2020 | 4 | 0 |
| 2021 | 1 | 2 |
| 2022 | 1 | 3 |
| 2023 | 1 | 3 |
| 2024 | 3 | 1 |
| 2025 | 2 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for preparing arylvinylsulphones28 Jul 2026US 12,692,224 B2Kemira Oyj
- Carbamate production method, carbamate ester production method, and urea derivative production method12 May 2026US 12,623,999 B2National Institute of Advanced Industrial Science and Technology
- Enantioselective process30 Dec 2025US 12,509,417 B2Syngenta Crop Protection AG
- Iron catalyzed highly enantioselective cis-dihydroxylation of quinones22 Apr 2025US 12,281,065 B2Laboratory for Synthetic Chemistry and Chemical Biology Limited
- Process for the production of acetals from carbon dioxide24 Dec 2024US 12,172,953 B2BASF SE
- Method for producing protected glycoside derivative16 Oct 2025US 2025/0320243 A1Resonac Corporation
- Process for preparing btk inhibitors13 Mar 2025US 2025/0084086 A1Hoffmann-La Roche Inc.
- Process for preparing btk inhibitors25 Apr 2024US 2024/0132508 A1Hoffmann-La Roche Inc.
- Method for preparing arylvinylsulphones7 Dec 2023US 2023/0391718 A1Kemira Oyj
- Iron catalyzed highly enantioselective cis-dihydroxylation of quinones20 Jul 2023US 2023/0227393 A1Laboratory for Synthetic Chemistry and Chemical Biology Limited
Most cited
By later US patents
- Oligomerization to alpha-olefins47US 4,689,437 AUnion Carbide Corporation · 1987
- Catalyst systems and their use for metathesis reactions24US 7,737,233 B2LANXESS Deutschland GmbH · 2010
- Process for reduction of carbon dioxide with organometallic complex15US 7,479,570 B2Japan Science and Technology Agency · 2009
- Olefin oxidation catalyst12US 4,448,892 APhillips Petroleum Company · 1984
- Organo-monovalent aurus complex catalysts for the manufacture of olefin oxides9US 4,391,756 AThe Standard Oil Company · 1983