B01J 37/30
Ion-exchange
B01J37/30 (Ion-exchange) appears on 421 US grants and 511 published applications in this corpus.
Search patents in B01J- Granted patents
- 421
- Published applications
- 511
- Assignees
- 260
- Inventors
- 1,368
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 7 |
| 2005 | 1 | 1 |
| 2006 | 3 | 6 |
| 2007 | 3 | 5 |
| 2008 | 1 | 5 |
| 2009 | 4 | 3 |
| 2010 | 1 | 16 |
| 2011 | 3 | 13 |
| 2012 | 6 | 13 |
| 2013 | 7 | 13 |
| 2014 | 10 | 11 |
| 2015 | 8 | 28 |
| 2016 | 14 | 27 |
| 2017 | 22 | 31 |
| 2018 | 33 | 44 |
| 2019 | 44 | 49 |
| 2020 | 48 | 52 |
| 2021 | 51 | 48 |
| 2022 | 38 | 37 |
| 2023 | 29 | 23 |
| 2024 | 26 | 33 |
| 2025 | 15 | 21 |
| 2026 | 16 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composite catalyst, method for producing composite catalyst, and method for producing lower olefins29 Sep 2026US 12,746,536 B2Chiyoda Corporation
- Oligomerization with ion-exchanged zeolites29 Sep 2026US 12,747,195 B2Exxonmoil Technology and Engineering Company
- Method for preparing acetic acid by catalyst22 Sep 2026US 12,741,922 B2Taiyuan University of Technology
- Process and catalyst for converting natural gasoline to light olefins8 Sep 2026US 12,729,345 B2King Fahd University of Petroleum and Minerals
- Catalyst for addition reaction of alkylene oxide and use thereof14 Jul 2026US 12,678,777 B2China Petroleum & Chemical Corporation
- Catalytic materials comprising fe-containing zeolitic material for the treatment of an exhaust gas1 Oct 2026US 2026/0295569 A1
- Hydrothermal treatment method of mww type zeolite supports and manufacturing method of mo-based methane dehydroaromatization catalysts using mww type zeolite supports dealuminated by hydrothermal treatment13 Aug 2026US 2026/0233210 A1Korea University Research and Business Foundation
- Mfi molecular sieve catalyst, preparation method therefor and use thereof30 Jul 2026US 2026/0216710 A1China Petroleum & Chemical Corporation
- Ferrierite (fer)-type zeolites and the uses thereof30 Jul 2026US 2026/0216711 A1Braskem America, Inc.
- Ammonia oxidation catalyst with zoned scr inlet and pgm outlet for gasoline applications23 Jul 2026US 2026/0208105 A1BASF SE
Most cited
By later US patents
- Process for the production of esters from alcohols using acetic acid as acetylating and clays as catalysts99US 6,472,555 B2Council of Scientific and Industrial Research · 2002
- Process for the preparation of a modified zeolite44US 5,059,567 APQ Zeolite B. V. · 1991
- Octane gasoline catalyst and process using same in a hydrocracking process44US 5,160,033 AUop LLC · 1992
- Activation of inorganic oxides42US 4,427,791 AMobil Oil Corporation · 1984
- Method for enhancing the activity of zeolite beta39US 5,116,794 AUop LLC · 1992