C02F 2201/461
Electrolysis apparatus
C02F2201/461 (Electrolysis apparatus) appears on 2,349 US grants and 2,909 published applications in this corpus.
Search patents in C02F- Granted patents
- 2,349
- Published applications
- 2,909
- Assignees
- 1,556
- Inventors
- 5,788
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 22 | 0 |
| 1978 | 28 | 0 |
| 1979 | 10 | 0 |
| 1980 | 14 | 0 |
| 1981 | 20 | 0 |
| 1982 | 13 | 0 |
| 1983 | 12 | 0 |
| 1984 | 10 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 16 | 0 |
| 1988 | 17 | 0 |
| 1989 | 15 | 0 |
| 1990 | 15 | 0 |
| 1991 | 23 | 0 |
| 1992 | 9 | 0 |
| 1993 | 13 | 0 |
| 1994 | 33 | 0 |
| 1995 | 34 | 0 |
| 1996 | 31 | 0 |
| 1997 | 40 | 0 |
| 1998 | 48 | 0 |
| 1999 | 72 | 0 |
| 2000 | 43 | 0 |
| 2001 | 74 | 7 |
| 2002 | 55 | 54 |
| 2003 | 48 | 91 |
| 2004 | 42 | 74 |
| 2005 | 34 | 68 |
| 2006 | 29 | 62 |
| 2007 | 27 | 67 |
| 2008 | 29 | 82 |
| 2009 | 26 | 100 |
| 2010 | 43 | 97 |
| 2011 | 39 | 124 |
| 2012 | 64 | 83 |
| 2013 | 70 | 130 |
| 2014 | 65 | 129 |
| 2015 | 80 | 156 |
| 2016 | 71 | 140 |
| 2017 | 89 | 131 |
| 2018 | 102 | 120 |
| 2019 | 114 | 128 |
| 2020 | 102 | 161 |
| 2021 | 81 | 142 |
| 2022 | 96 | 161 |
| 2023 | 120 | 180 |
| 2024 | 98 | 152 |
| 2025 | 103 | 150 |
| 2026 | 74 | 120 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Waste water treatment process6 Oct 2026US 12,753,095 B2U.S. Clean Water Technology, Inc.
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- Ion exchange membrane composition and methods for the concentration of perfluoroalkyl substances29 Sep 2026US 12,747,172 B2Evoqua Water Technologies LLC
- Recycling system29 Sep 2026US 12,747,175 B2Abu Dhabi University
- Electrochemical nitrogen and phosphorus removal device and method29 Sep 2026US 12,747,176 B2Beijing Drainage Group Co., Ltd
- Electrochemical cell8 Oct 2026US 2026/0308024 A1Imperial College Innovations Limited
- Oxygen or hydrogen functional water production device1 Oct 2026US 2026/0296941 A1Cosan Co., Ltd.
- Appliance with split-electrode water filtration assembly24 Sep 2026US 2026/0285713 A1Haier US Appliance Solutions, Inc.
- System and method for on-site generation of chlorine-based disinfectant24 Sep 2026US 2026/0285714 A1
- Electrolytic ion water generation device24 Sep 2026US 2026/0285715 A1E-Plan, Inc.
Most cited
By later US patents
- Electrochemical production of ozone and hydrogen peroxide465US 5,972,196 ALynntech, Inc. · 1999
- Electrochemical synthesis of hydrogen peroxide366US 6,712,949 B2The Electrosynthesis Company, Inc. · 2004
- Electrodeionization apparatus202US 4,632,745 AMillipore Corporation · 1986
- Method and apparatus for capacitive deionization, electrochemical purification, and regeneration of electrodes157US 5,425,858 AThe Regents of the University of California · 1995
- Water treatment system for swimming pools and potable water151US 4,752,401 ASafe Water Systems International, Inc. · 1988