B01D 61/46
Apparatus therefor
B01D61/46 (Apparatus therefor) appears on 686 US grants and 859 published applications in this corpus.
Search patents in B01D- Granted patents
- 686
- Published applications
- 859
- Assignees
- 431
- Inventors
- 1,603
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 12 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 9 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 11 | 0 |
| 2001 | 21 | 4 |
| 2002 | 17 | 15 |
| 2003 | 12 | 15 |
| 2004 | 11 | 32 |
| 2005 | 4 | 22 |
| 2006 | 17 | 29 |
| 2007 | 9 | 17 |
| 2008 | 13 | 18 |
| 2009 | 12 | 9 |
| 2010 | 16 | 22 |
| 2011 | 11 | 20 |
| 2012 | 17 | 29 |
| 2013 | 10 | 32 |
| 2014 | 23 | 27 |
| 2015 | 28 | 33 |
| 2016 | 30 | 34 |
| 2017 | 21 | 38 |
| 2018 | 24 | 39 |
| 2019 | 33 | 31 |
| 2020 | 28 | 39 |
| 2021 | 19 | 43 |
| 2022 | 22 | 48 |
| 2023 | 31 | 81 |
| 2024 | 33 | 70 |
| 2025 | 40 | 65 |
| 2026 | 35 | 47 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 61/48Having one or more compartments filled with ion-exchange material373
- B01D 61/50Stacks of the plate-and-frame type168
- B01D 61/463Comprising the membrane sequence ac or ca, where c is a cation146
- B01D 61/461Comprising only a single cell, only one anion or cation exchange membrane70
- B01D 61/465Comprising the membrane sequence ab or ba, where b is a bipolar26
- B01D 61/466Comprising the membrane sequence bc or cb22
- B01D 61/464Comprising the membrane sequence cc15
- B01D 61/468Comprising more than two electrodes15
Recent patents
- Hybrid system and method of waste heat utilization-based photovoltaic power generation and seawater desalination6 Oct 2026US 12,752,240 B2Xi' An Jiaotong University
- Pure water production system and pure water production method29 Sep 2026US 12,747,171 B2Organo Corporation
- System and method for capturing carbon dioxide from a humidity adjusted air stream1 Sep 2026US 12,722,118 B2
- Chlorine tolerance of continuous electrodeionization modules1 Sep 2026US 12,722,121 B2Evoqua Water Technologies LLC
- Apparatus and methods for nitrogen reduction in wastewater11 Aug 2026US 12,703,650 B2The Board of Trustees of the Leland Stanford Junior University
- Ion exchange membrane8 Oct 2026US 2026/0307020 A1Khalifa University of Science and Technology
- Simultaneous production method of lithium hydroxide and sulfuric acid1 Oct 2026US 2026/0296908 A1Posco Holdings Inc.
- Methods for carbon capture and metal recovery and related systems24 Sep 2026US 2026/0284595 A1Battelle Energy Alliance, LLC
- Electrochemical system for generating acidic and basic solutions17 Sep 2026US 2026/0273470 A1The Board of Trustees of the Leland Stanford Junior University
- Electrodialyzer and Electrodialysis System for CO2 Capture from Ocean Water17 Sep 2026US 2026/0274718 A1California Institute of Technology
Most cited
By later US patents
- Electrodeionization apparatus202US 4,632,745 AMillipore Corporation · 1986
- Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack155US 5,066,375 AIonics, Incorporated · 1991
- Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions140US 4,636,296 A1987
- Method and apparatus for high efficiency reverse osmosis operation122US 5,925,255 A1999
- Electrolytic process and apparatus for the controlled oxidation of inorganic and organic species in aqueous solutions111US 5,419,816 AHalox Technologies, Inc. · 1995