B01D 61/445
With bipolar membranes
Official title: {with bipolar membranes; Water splitting}
B01D61/445 (With bipolar membranes) appears on 322 US grants and 346 published applications in this corpus.
Search patents in B01D- Granted patents
- 322
- Published applications
- 346
- Assignees
- 245
- Inventors
- 912
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 11 | 0 |
| 1994 | 9 | 0 |
| 1995 | 7 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 10 | 0 |
| 1999 | 14 | 0 |
| 2000 | 5 | 0 |
| 2001 | 15 | 3 |
| 2002 | 3 | 2 |
| 2003 | 8 | 4 |
| 2004 | 6 | 5 |
| 2005 | 1 | 5 |
| 2006 | 2 | 7 |
| 2007 | 5 | 8 |
| 2008 | 2 | 7 |
| 2009 | 1 | 4 |
| 2010 | 2 | 5 |
| 2011 | 5 | 9 |
| 2012 | 3 | 10 |
| 2013 | 6 | 14 |
| 2014 | 6 | 16 |
| 2015 | 5 | 12 |
| 2016 | 10 | 7 |
| 2017 | 13 | 15 |
| 2018 | 14 | 19 |
| 2019 | 9 | 16 |
| 2020 | 13 | 18 |
| 2021 | 13 | 21 |
| 2022 | 8 | 13 |
| 2023 | 12 | 28 |
| 2024 | 10 | 37 |
| 2025 | 17 | 32 |
| 2026 | 15 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for dual-pathway system for carbon dioxide capture from ocean water30 Jun 2026US 12,668,518 B2California Institute of Technology
- Compounds, compositions and polymer films19 May 2026US 12,630,502 B2FUJIFILM Corporation
- Alkali hydroxide production from alkali sulfate with halogen or carboxylic acid intermediates5 May 2026US 12,618,162 B2Innovator Energy, LLC
- Systems and methods for capturing carbon dioxide and regenerating a capture solution28 Apr 2026US 12,611,629 B2Carbon Engineering ULC
- Processes for preparing hydroxides and oxides of various metals and derivatives thereof21 Apr 2026US 12,606,456 B2Nemaska Lithium Inc.
- Simultaneous production method of lithium hydroxide and sulfuric acid1 Oct 2026US 2026/0296908 A1Posco Holdings Inc.
- 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
- A method for recovery of lithium13 Aug 2026US 2026/0233998 A1Northvolt Revolt AB
- Processes for preparing hydroxides and oxides of various metals and derivatives thereof13 Aug 2026US 2026/0234024 A1Nemaska Lithium Inc.
Most cited
By later US patents
- Method and apparatus for isolation of ionic species from a liquid91US 7,704,361 B2Jurag Separation A/S · 2010
- Laminated glass with functional ultra-fine particles and method of producing same81US 5,830,568 ACentral Glass Company, Limited · 1998
- Apparatus for the removal of dissolved solids from liquids using bipolar membranes78US 4,871,431 AIonics, Incorporated · 1989
- Preparing alkali metal hydroxide by water splitting and hydrolysis73US 4,391,680 AAllied Corporation · 1983
- Apparatus and process for the removal of acidic and basic gases from fluid mixtures using bipolar membranes71US 4,969,983 AIonics, Incorporated · 1990