B01J 47/12
Ion-exchange processes in general: characterised by the use of ion-exchange material in
Official title: characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes (electrodialysis or electro-osmosis B01D61/42)
B01J47/12 (Ion-exchange processes in general: characterised by the use of ion-exchange material in) appears on 404 US grants and 490 published applications in this corpus.
Search patents in B01J- Granted patents
- 404
- Published applications
- 490
- Assignees
- 286
- Inventors
- 1,172
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 9 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 7 |
| 2003 | 10 | 9 |
| 2004 | 9 | 10 |
| 2005 | 4 | 12 |
| 2006 | 4 | 8 |
| 2007 | 5 | 5 |
| 2008 | 3 | 7 |
| 2009 | 4 | 11 |
| 2010 | 4 | 9 |
| 2011 | 2 | 9 |
| 2012 | 10 | 15 |
| 2013 | 8 | 14 |
| 2014 | 3 | 15 |
| 2015 | 18 | 28 |
| 2016 | 15 | 16 |
| 2017 | 18 | 37 |
| 2018 | 21 | 36 |
| 2019 | 29 | 21 |
| 2020 | 21 | 36 |
| 2021 | 23 | 32 |
| 2022 | 17 | 26 |
| 2023 | 22 | 34 |
| 2024 | 19 | 34 |
| 2025 | 22 | 27 |
| 2026 | 14 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cation exchange membrane and method for producing same1 Sep 2026US 12,722,125 B2Astom Corporation
- Preparation of metallocene containing cationic polymers for anion exchange applications28 Jul 2026US 12,691,419 B2University of South Carolina
- Compounds, compositions and polymer films19 May 2026US 12,630,502 B2FUJIFILM Corporation
- Physically reinforced structured organic film (SOF) anion exchange membranes (AEMs)12 May 2026US 12,623,212 B2Xerox Corporation
- Polymers for use as anion exchange membranes5 May 2026US 12,617,889 B1Envision Energy USA Ltd.
- Single-ion electrolytes for solid-state alkaline batteries24 Sep 2026US 2026/0291007 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Novel materials and methods for refining processes17 Sep 2026US 2026/0273436 A1Lihme Protein Solutions ApS
- Cationic Compounds for Anion Exchange Membranes3 Sep 2026US 2026/0257990 A1Agfa-Gevaert
- Water treatment apparatus and control method of water treatment apparatus20 Aug 2026US 2026/0242258 A1Samsung Electronics Co., Ltd.
- Patterned alkaline exchange membranes13 Aug 2026US 2026/0234309 A1Ecolectro, Inc
Most cited
By later US patents
- Affinity matrices of modified polysaccharide supports427US 5,059,654 ACuno Incorporated · 1991
- Electrochemically assisted ion exchange123US 5,788,826 APionetics Corporation · 1998
- Composite materials comprising supported porous gels116US 7,316,919 B2Nysa Membrane Technologies · 2008
- Method and apparatus for filtration with plural ultraviolet treatment stages112US 5,236,595 AInternational Environmental Systems, Inc., USA · 1993
- Bipolar membranes and method of making same111US 4,116,889 AAllied Chemical Corporation · 1978