Fluid disinfection apparatus and methods
US-12473213-B2 · Nov 18, 2025 · US
Lamps suspended above a water surface or pipe
Lamps suspended above a water surface or pipe · 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 | C02F2201/3221 |
| Official title | Lamps suspended above a water surface or pipe |
| Display label | Lamps suspended above a water surface or pipe |
| Total patents | 64 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 8 |
| 2018 | 8 |
| 2019 | 8 |
| 2020 | 9 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid sterilization device
US-2025177587-A1 · Jun 5, 2025 · US
Fluid sterilization device
US-2025100903-A1 · Mar 27, 2025 · US
Sterilization module, water purification device, and system comprising water purification device
US-12168617-B2 · Dec 17, 2024 · US
Method and apparatus for flash lamp treatment of liquid streams
US-2024116778-A1 · Apr 11, 2024 · US
Sterilization module, water purification device, and system comprising water purification device
US-2024025771-A1 · Jan 25, 2024 · US
Photoreactor and source for generating uv and vuv
US-2023360902-A1 · Nov 9, 2023 · US
Sterilization module, water purification device, and system comprising water purification device
US-11787707-B2 · Oct 17, 2023 · US
Ultraviolet irradiation unit and ultraviolet stertilization device
US-11752227-B2 · Sep 12, 2023 · US
Fluid disinfection apparatus and methods
US-2023088023-A1 · Mar 23, 2023 · US
Uv disinfectant system
US-2023001030-A1 · Jan 5, 2023 · US
UV disinfectant system
US-11497824-B2 · Nov 15, 2022 · US
Porous titania photocatalyst on quartz fibers and methods of using the same for chemical-free uv-aop in water treatment
US-2022288561-A1 · Sep 15, 2022 · US
Sterilization module, water purification device, and system comprising water purification device
US-2022135441-A1 · May 5, 2022 · US
Sterilization module, water purification device, and system comprising water purification device
US-11225419-B2 · Jan 18, 2022 · US
Ultraviolet irradiation unit and ultraviolet sterilization device
US-2021236673-A1 · Aug 5, 2021 · US
Water purifier
US-11040894-B2 · Jun 22, 2021 · US
Water treatment system
US-11014827-B2 · May 25, 2021 · US
UV Disinfectant System
US-2020330629-A1 · Oct 22, 2020 · US
Water purifier
US-2020290894-A1 · Sep 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2201/3221?
- CPC C02F2201/3221 is the Cooperative Patent Classification code for “Lamps suspended above a water surface or pipe.”
- How many patents are filed under CPC C02F2201/3221 (Lamps suspended above a water surface or pipe)?
- Our database includes 64 publications tagged with this CPC code.
- Is patent activity under CPC C02F2201/3221 growing?
- Publication counts under this code: 3 in 2024 vs 5 in 2025 (latest complete years).