Grey water system
US-2024051852-A1 · Feb 15, 2024 · US
Inversing polarity
Inversing polarity · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C02F2201/4613 |
| Official title | Inversing polarity |
| Display label | Inversing polarity |
| Total patents | 143 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 8 |
| 2017 | 8 |
| 2018 | 14 |
| 2019 | 12 |
| 2020 | 17 |
| 2021 | 15 |
| 2022 | 14 |
| 2023 | 11 |
| 2024 | 13 |
| 2025 | 15 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrocoagulation device
US-2020407245-A1 · Dec 31, 2020 · US
Ultrafine bubble generating method, ultrafine bubble generating apparatus, and ultrafine bubble-containing liquid
US-2020276515-A1 · Sep 3, 2020 · US
Chlorination-assisted coagulation processes for water purification
US-10597313-B2 · Mar 24, 2020 · US
Chlorination-assisted coagulation processes for water purification
US-2020087173-A1 · Mar 19, 2020 · US
Pollutant removing system for water treatment
US-2020062618-A1 · Feb 27, 2020 · US
Electrochemical cell, water treatment device provided with same, and operating method for water treatment device
US-10507429-B2 · Dec 17, 2019 · US
Electrolytic on-site generator
US-10400349-B2 · Sep 3, 2019 · US
Device for electrocoagulation and process
US-10392274-B2 · Aug 27, 2019 · US
Ultrafiltration TIO2 magnéli phase reactive electrochemical membranes
US-10364169-B2 · Jul 30, 2019 · US
Electrochemical descaling by pulsed signal reversal
US-10314110-B2 · Jun 4, 2019 · US
Electrode for electrochemical abatement of chemical oxygen demand of industrial wastes
US-10287190-B2 · May 14, 2019 · US
Electrode for electrochlorination processes and method of manufacturing thereof
US-10287188-B2 · May 14, 2019 · US
Fluid Purification Methods, Devices, and Systems
US-2019092660-A1 · Mar 28, 2019 · US
Systems and methods for supplying treatment liquids having nanobubbles
US-10219670-B2 · Mar 5, 2019 · US
Fluid purification methods, devices, and systems
US-10189727-B2 · Jan 29, 2019 · US
Fluid purification methods, devices, and systems
US-10189728-B2 · Jan 29, 2019 · US
Aerodynamic device for motor-vehicle
US-10173736-B2 · Jan 8, 2019 · US
Electrochemical cell, water treatment device provided with same, and operating method for water treatment device
US-2018369755-A1 · Dec 27, 2018 · US
Electrochemical reactor, an apparatus and a system for treating water, and a method for controlling a water treatment apparatus
US-2018297869-A1 · Oct 18, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2201/4613?
- CPC C02F2201/4613 is the Cooperative Patent Classification code for “Inversing polarity.”
- How many patents are filed under CPC C02F2201/4613 (Inversing polarity)?
- Our database includes 143 publications tagged with this CPC code.
- Is patent activity under CPC C02F2201/4613 growing?
- Publication counts under this code: 13 in 2024 vs 15 in 2025 (latest complete years).