C02F 2001/4619
Only cathodic or alkaline water
Official title: {only cathodic or alkaline water, e.g. for reducing}
C02F2001/4619 (Only cathodic or alkaline water) appears on 112 US grants and 181 published applications in this corpus.
Search patents in C02F- Granted patents
- 112
- Published applications
- 181
- Assignees
- 112
- Inventors
- 340
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 0 |
| 2002 | 7 | 5 |
| 2003 | 3 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 3 |
| 2006 | 0 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 3 |
| 2009 | 0 | 11 |
| 2010 | 3 | 10 |
| 2011 | 1 | 7 |
| 2012 | 4 | 9 |
| 2013 | 3 | 3 |
| 2014 | 3 | 9 |
| 2015 | 4 | 5 |
| 2016 | 2 | 7 |
| 2017 | 4 | 10 |
| 2018 | 3 | 10 |
| 2019 | 8 | 19 |
| 2020 | 4 | 9 |
| 2021 | 4 | 5 |
| 2022 | 14 | 11 |
| 2023 | 9 | 12 |
| 2024 | 10 | 6 |
| 2025 | 4 | 11 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and methods for nitrogen reduction in wastewater11 Aug 2026US 12,703,650 B2The Board of Trustees of the Leland Stanford Junior University
- Water treatment method and water treatment apparatus10 Mar 2026US 12,570,560 B2Yokogawa Electric Corporation
- Hygienization generator for integrated aqueous ozone and alkaline water production23 Dec 2025US 12,502,446 B2BioSure North America LLC
- Hygienization generator for integrated aqueous ozone and alkaline water production4 Nov 2025US 12,458,717 B2BioSure North America LLC
- Hydrogen addition device and hydrogen addition method4 Nov 2025US 12,459,840 B2Nihon Trim Co., Ltd.
- Electrolytic ion water generation device24 Sep 2026US 2026/0285715 A1E-Plan, Inc.
- Alkaline water electrolysis process and alkaline water electrolyzer23 Jul 2026US 2026/0209953 A1
- Electrochemical metallurgical slag recycling14 May 2026US 2026/0132484 A1Electrasteel, Inc.
- Production of hydrogen and solid lithium hydroxide12 Mar 2026US 2026/0071333 A1Evonik Operations GmbH
- Electrolysis water filter system12 Feb 2026US 2026/0042687 A1Jow Tong Technology Co., Ltd.
Most cited
By later US patents
- Electrochemical cell43US 5,635,040 ARSCECAT, USA, Inc. · 1997
- Production of electrolytic water37US 7,238,272 B22007
- Apparatus and method for cleaning semiconductor wafers34US 5,725,753 APre-Tech Co., Ltd. · 1998
- Method and apparatus for producing electrolyzed water31US 6,251,259 B1Miz Co., Ltd. · 2001
- Water electrolyzer29US 5,378,339 ATechno Excel Kabushiki Kaisha · 1995