B01J 2531/98
Phase-transfer catalysis in a mixed solvent system containing at least 2 immiscible
Official title: Phase-transfer catalysis in a mixed solvent system containing at least 2 immiscible solvents or solvent phases
B01J2531/98 (Phase-transfer catalysis in a mixed solvent system containing at least 2 immiscible) appears on 85 US grants and 76 published applications in this corpus.
Search patents in B01J- Granted patents
- 85
- Published applications
- 76
- Assignees
- 83
- Inventors
- 263
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 3 |
| 2003 | 2 | 4 |
| 2004 | 2 | 4 |
| 2005 | 2 | 3 |
| 2006 | 2 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 3 | 4 |
| 2011 | 1 | 3 |
| 2012 | 3 | 5 |
| 2013 | 2 | 4 |
| 2014 | 3 | 1 |
| 2015 | 4 | 3 |
| 2016 | 1 | 2 |
| 2017 | 3 | 3 |
| 2018 | 2 | 1 |
| 2019 | 1 | 6 |
| 2020 | 3 | 2 |
| 2021 | 2 | 3 |
| 2022 | 2 | 6 |
| 2023 | 6 | 5 |
| 2024 | 1 | 2 |
| 2025 | 0 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Formate production method, formic acid production method, and antifreezing agent production method21 Apr 2026US 12,606,513 B2Nitto Denko Corporation
- Production method for 1,2,3,5,6-pentathiepane5 Mar 2024US 11,919,877 B2Mitsubishi Gas Chemical Company, Inc.
- Catalyst composition, a process for preparing the catalyst composition, and a use of the catalyst composition19 Dec 2023US 11,845,069 B2Yangtze University
- Hydrophilic phosphorus ligand and method for separation and recovery of catalyst31 Oct 2023US 11,801,504 B2Industrial Technology Research Institute
- Process for the synthesis of 2,3,3,3-tetrafluoropropene19 Sep 2023US 11,760,707 B2
- Catalyst for hydrocarbon fuel emission and fuel usage reduction3 Jul 2025US 2025/0214065 A1Jake Vernon LLC
- Preparation method for ni and mn bimetallic electrocatalyst and its application in small molecule electrooxidation20 Mar 2025US 2025/0091040 A1Beijing University of Chemical Technology
- Encapsulated catalytic composition27 Feb 2025US 2025/0065317 A1Ifp Energies Nouvelles
- Catalytic composition in the form of a pickering emulsion13 Feb 2025US 2025/0050319 A1Ifp Energies Nouvelles
- Method for producing hydrogen24 Oct 2024US 2024/0351867 A1Nitto Denko Corporation
Most cited
By later US patents
- Phase transfer catalyzed preparation of aromatic polyether polymers113US 5,229,482 AGeneral Electric Company · 1993
- Fluorous multiphase systems35US 5,463,082 AExxon Research & Engineering Co. · 1995
- Modified titanium oxide sol, photocatalyst composition and photocatalyst composition-forming agent27US 5,897,958 AAsahi Glass Company, Limited · 1999
- Phase transfer catalysts26US 4,460,778 AGeneral Electric Company · 1984
- Phase transfer catalysis23US 4,754,089 ASepracor Inc. · 1988