B01J 2231/347
Via cationic intermediates
Official title: via cationic intermediates, e.g. bisphenol A type processes
B01J2231/347 (Via cationic intermediates) appears on 59 US grants and 38 published applications in this corpus.
Search patents in B01J- Granted patents
- 59
- Published applications
- 38
- Assignees
- 29
- Inventors
- 156
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 3 |
| 2003 | 4 | 4 |
| 2004 | 5 | 5 |
| 2005 | 3 | 3 |
| 2006 | 3 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 4 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 0 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Intermediates for making derivatives of substituted morpholines18 Aug 2026US 12,709,602 B2Supernus Pharmaceuticals, Inc.
- Pretreatment process of resin catalyst for synthesizing bisphenol A26 Aug 2025US 12,397,287 B1Tianjin University
- Process for reducing by-products in bisphenol A reaction system1 Jul 2025US 12,344,575 B1Tianjin University
- Process of making derivatives of substituted morpholines23 Apr 2024US 11,964,951 B2Supernus Pharmaceuticals, Inc.
- Catalyst system and process for producing bisphenol-A1 Mar 2022US 11,260,378 B2Badger Licensing LLC
- Process of making derivatives of substituted morpholines19 Mar 2026US 2026/0078098 A1Supernus Pharmaceuticals, Inc.
- Method for carrying out a chemical reaction in an upflow reactor20 Feb 2025US 2025/0058309 A1Sabic Global Technologies B.V.
- Core shell catalyst and method for manufacturing the same20 Feb 2025US 2025/0058311 A1Sabic Global Technologies B.V.
- Process of making derivatives of substituted morpholines9 Nov 2023US 2023/0357173 A1Supernus Pharmaceuticals, Inc.
- Process of making derivatives of substituted morpholines21 Sep 2023US 2023/0295100 A1Supernus Pharmaceuticals, Inc.
Most cited
By later US patents
- Method and catalyst for making bisphenol46US 4,396,728 AGeneral Electric Company · 1983
- Method and catalyst for making bisphenol37US 4,346,247 AGeneral Electric Company · 1982
- Method and catalyst for making bisphenol37US 4,584,416 AGeneral Electric Company · 1986
- Method and catalyst for making bisphenol35US 4,294,995 AGeneral Electric Company · 1981
- Process and catalyst for production of bisphenol-A31US 4,820,740 AShell Oil Company · 1989