B01J 31/08
Ion-exchange resins
B01J31/08 (Ion-exchange resins) appears on 505 US grants and 349 published applications in this corpus.
Search patents in B01J- Granted patents
- 505
- Published applications
- 349
- Assignees
- 296
- Inventors
- 1,224
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 13 | 0 |
| 1978 | 8 | 0 |
| 1979 | 9 | 0 |
| 1980 | 6 | 0 |
| 1981 | 10 | 0 |
| 1982 | 16 | 0 |
| 1983 | 11 | 0 |
| 1984 | 11 | 0 |
| 1985 | 6 | 0 |
| 1986 | 13 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 11 | 0 |
| 1993 | 12 | 0 |
| 1994 | 7 | 0 |
| 1995 | 12 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 13 | 0 |
| 1999 | 13 | 0 |
| 2000 | 13 | 0 |
| 2001 | 14 | 4 |
| 2002 | 12 | 13 |
| 2003 | 16 | 19 |
| 2004 | 13 | 20 |
| 2005 | 12 | 9 |
| 2006 | 7 | 10 |
| 2007 | 7 | 9 |
| 2008 | 0 | 11 |
| 2009 | 6 | 11 |
| 2010 | 8 | 15 |
| 2011 | 8 | 15 |
| 2012 | 10 | 26 |
| 2013 | 19 | 13 |
| 2014 | 9 | 17 |
| 2015 | 11 | 15 |
| 2016 | 12 | 15 |
| 2017 | 14 | 18 |
| 2018 | 18 | 8 |
| 2019 | 6 | 15 |
| 2020 | 12 | 13 |
| 2021 | 8 | 15 |
| 2022 | 6 | 17 |
| 2023 | 18 | 11 |
| 2024 | 5 | 17 |
| 2025 | 12 | 8 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for the preparation of 3,4-methylenedioxypropiophenone6 Oct 2026US 12,753,160 B2Endura S. P. A.
- Catalyst for addition reaction of alkylene oxide and use thereof14 Jul 2026US 12,678,777 B2China Petroleum & Chemical Corporation
- Removal of aldehydes in acetic acid production12 May 2026US 12,623,991 B2LyondellBasell Acetyls, LLC
- Method of preparing heterogeneous linear carbonate using amine-based compound catalyst12 May 2026US 12,623,995 B2Lotte Chemical Corporation
- Non-metal catalyst for synthesizing polycarbonate by CO2 and preparation method therefor31 Mar 2026US 12,589,384 B2Wuhan Institute of Technology
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295522 A1Boston Scientific Scimed, Inc.
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295523 A1Boston Scientific Scimed, Inc.
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295524 A1Boston Scientific Scimed, Inc.
- Catalytic deprotection method for organic molecules16 Jul 2026US 2026/0200966 A1FilmTec Water USA, LLC
- Ionic polymeric resin compositions22 Jan 2026US 2026/0022200 A1Ecolab USA Inc.
Most cited
By later US patents
- System for hydrogen generation118US 6,534,033 B1Millennium Cell, Inc. · 2003
- Method for depositing a fluorocarbonsulfonic acid polymer on a support from a solution104US 4,661,411 AThe Dow Chemical Company · 1987
- Process for improving productivity of a carbonylation catalyst solution by removing corrosion metals77US 5,731,252 AHoechst Celanese Corporation · 1998
- Porous rigid resins and process of preparation71US 4,933,372 ASupelco, Inc. · 1990
- Process for making a hydrogen generation catalyst66US 6,683,025 B2Millennium Cell, Inc. · 2004