B01J 31/0225
Comprising sulfonic acid groups or the corresponding salts
Official title: {comprising sulfonic acid groups or the corresponding salts}
B01J31/0225 (Comprising sulfonic acid groups or the corresponding salts) appears on 283 US grants and 209 published applications in this corpus.
Search patents in B01J- Granted patents
- 283
- Published applications
- 209
- Assignees
- 176
- Inventors
- 700
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 8 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 10 | 0 |
| 1994 | 10 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 10 | 4 |
| 2002 | 13 | 10 |
| 2003 | 8 | 8 |
| 2004 | 5 | 10 |
| 2005 | 3 | 5 |
| 2006 | 3 | 3 |
| 2007 | 5 | 7 |
| 2008 | 1 | 4 |
| 2009 | 1 | 7 |
| 2010 | 4 | 10 |
| 2011 | 3 | 2 |
| 2012 | 3 | 6 |
| 2013 | 3 | 5 |
| 2014 | 10 | 2 |
| 2015 | 7 | 10 |
| 2016 | 9 | 15 |
| 2017 | 8 | 8 |
| 2018 | 9 | 12 |
| 2019 | 9 | 14 |
| 2020 | 12 | 6 |
| 2021 | 7 | 10 |
| 2022 | 6 | 19 |
| 2023 | 7 | 10 |
| 2024 | 3 | 7 |
| 2025 | 5 | 8 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polyester hydrogenolytic deconstruction via tandem catalysis17 Mar 2026US 12,577,365 B2Northwestern University
- Depolymerization of polymers with ester, ether and carbonate linkages using acidic ionic liquid (AIL) catalyst20 Jan 2026US 12,528,929 B2Council of Scientific and Industrial Research An Indian Resgistered Body Incorporated Under the Regn. of Soc. Act (Act Xxi of 1860)
- Enzymes and metal-organic frameworks (MOFs)30 Dec 2025US 12,508,581 B2BASF SE
- Formation of n-protected 3,6-bis-(4-aminoalkyl)-2,5,diketopiperazine4 Nov 2025US 12,459,903 B2MannKind Corporation
- Method for preparing organic carboxylic ester by using combined catalyst of aryl bidentate phosphine ligand26 Aug 2025US 12,398,089 B2Lanzhou Institute of Chemical Physics, CAS
- Picolyl ligands and their use in alkoxycarbonylation18 Jun 2026US 2026/0167653 A1Evonik Oxeno GmbH
- Catalyst system and process for producing bisphenol-a11 Jun 2026US 2026/0158479 A1Badger Licensing LLC
- Backside polishing additive for reducing alkali consumption and preparation method and use thereof28 May 2026US 2026/0145165 A1
- Process of Making 2,2,6,6,7,8,8-heptamethyl-3,6,7,8-tetrahydro-2H-indeno[4,5-b]furan and Its Uses28 May 2026US 2026/0146033 A1International Flavors & Fragrances Inc.
- Method of producing oligosaccharide amphiphiles16 Apr 2026US 2026/0103547 A1National University of Singapore
Most cited
By later US patents
- Polymerization of carbon monoxide/olefin with P ligand having polar aryl group101US 4,843,144 AShell Oil Company · 1989
- Functionalized ionic liquids, and methods of use thereof64US 7,208,605 B2University of South Alabama · 2007
- Process for the chemical modification of surfaces of inorganic solids63US 3,956,179 A1976
- Perfluorinated amide salts and their uses as ionic conducting materials61US 6,319,428 B1Centre National De La Recherche Scientifique · 2001
- Preparation of carbamates44US 4,474,978 AShell Oil Company · 1984