B01J 21/20
Regeneration or reactivation
B01J21/20 (Regeneration or reactivation) appears on 188 US grants and 93 published applications in this corpus.
Search patents in B01J- Granted patents
- 188
- Published applications
- 93
- Assignees
- 112
- Inventors
- 427
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 15 | 0 |
| 1982 | 16 | 0 |
| 1983 | 6 | 0 |
| 1984 | 11 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 3 |
| 2004 | 2 | 3 |
| 2005 | 2 | 0 |
| 2006 | 2 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 7 |
| 2010 | 3 | 6 |
| 2011 | 2 | 1 |
| 2012 | 0 | 3 |
| 2013 | 2 | 8 |
| 2014 | 9 | 7 |
| 2015 | 5 | 5 |
| 2016 | 8 | 7 |
| 2017 | 7 | 5 |
| 2018 | 6 | 6 |
| 2019 | 5 | 8 |
| 2020 | 5 | 3 |
| 2021 | 2 | 4 |
| 2022 | 6 | 2 |
| 2023 | 4 | 2 |
| 2024 | 4 | 3 |
| 2025 | 1 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process and a system for enhancing the yield of light olefins2 Jun 2026US 12,643,839 B2Indian Oil Corporation Limited
- Catalyst decontamination process24 Mar 2026US 12,582,978 B2Praxair Technology, Inc.
- Regenerated denitration catalyst and method for manufacturing the same, and denitration apparatus30 Sep 2025US 12,427,509 B2Mitsubishi Heavy Industries, Ltd.
- Hydrocarbon reforming catalyst and hydrocarbon reforming apparatus16 Apr 2024US 11,958,746 B2Murata Manufacturing Co., Ltd.
- Preparation method and application of tailings-based zeolite@CDs-TiO2 composite photocatalyst9 Apr 2024US 11,951,460 B1Taiyuan University of Technology
- Photocatalytic gate especially for air and surface disinfection3 Sep 2026US 2026/0256976 A1
- Method for regenerating a catalyst for processing reactive feedstock19 Mar 2026US 2026/0078308 A1Topsoe A/S
- Epoxide compounds, methods of preparations and uses thereof30 Oct 2025US 2025/0333391 A1Zschimmer & Schwarz, Inc.
- Method and Device for Pyrolysis-Based Production of Hydrocarbon Oils Based on Plastic Containing Raw Material29 May 2025US 2025/0171694 A1Inrigo AS
- Catalyst and method embodiments for making para-xylene and ortho-xylene20 Mar 2025US 2025/0091036 A1Battelle Memorial Institute
Most cited
By later US patents
- Catalytic process for degradation of organic materials in aqueous and organic fluids to produce environmentally compatible products125US 4,861,484 ASynlize, Inc. · 1989
- Passivating metals on cracking catalysts71US 4,025,458 APhillips Petroleum Company · 1977
- Three-stage catalyst regeneration64US 4,325,833 AChevron Research Company · 1982
- Fluid catalyst regeneration process63US 4,353,812 AUop LLC · 1982
- Fluid particle backmixed cooling process57US 4,439,533 AUop LLC · 1984