Filtration system for pet water fountain, and method for water filtration
US-2017362092-A1 · Dec 21, 2017 · US
Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems · 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 | C02F9/20 |
| Official title | Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems |
| Display label | Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems |
| Total patents | 307 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 25 |
| 2017 | 19 |
| 2018 | 31 |
| 2019 | 42 |
| 2020 | 32 |
| 2021 | 37 |
| 2022 | 26 |
| 2023 | 27 |
| 2024 | 20 |
| 2025 | 22 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Modular filtration platform
US-2017259196-A1 · Sep 14, 2017 · US
Filter cartridge
US-2017252678-A1 · Sep 7, 2017 · US
System and method for water purification with automatic purge
US-9745207-B2 · Aug 29, 2017 · US
Water treatment apparatus
US-9725347-B2 · Aug 8, 2017 · US
Filter cartridge
US-9687762-B2 · Jun 27, 2017 · US
Systems and methods for treating oilfield wastewater
US-2017158538-A1 · Jun 8, 2017 · US
Water purifier
US-9669336-B2 · Jun 6, 2017 · US
Method for sterilizing water supply apparatus
US-9656896-B2 · May 23, 2017 · US
Drinking water filter with integral self-disinfecting delivery system
US-9656880-B2 · May 23, 2017 · US
Refrigerator
US-9651296-B2 · May 16, 2017 · US
Inductively coupled ballast circuit
US-2017133882-A1 · May 11, 2017 · US
Systems, compositions and methods for providing safe and healthy water and water-based products
US-9604861-B2 · Mar 28, 2017 · US
Inductively coupled ballast circuit
US-9590456-B2 · Mar 7, 2017 · US
Selective water temperature component for use with water treatment systems
US-2017036902-A1 · Feb 9, 2017 · US
Oil-water separation treatment system and oil-water separation treatment method
US-2017015567-A1 · Jan 19, 2017 · US
Aircraft galley plumbing system potable water manifold/filter block
US-9546472-B2 · Jan 17, 2017 · US
Electronic interface for water filtration system
US-9533243-B2 · Jan 3, 2017 · US
Selective water temperature component for use with water treatment systems
US-9523514-B2 · Dec 20, 2016 · US
Smart water filter system
US-2016340207-A1 · Nov 24, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F9/20?
- CPC C02F9/20 is the Cooperative Patent Classification code for “Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems.”
- How many patents are filed under CPC C02F9/20 (Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems)?
- Our database includes 307 publications tagged with this CPC code.
- Is patent activity under CPC C02F9/20 growing?
- Publication counts under this code: 20 in 2024 vs 22 in 2025 (latest complete years).