Negative electrostatic filtration apparatus
US-11878310-B2 · Jan 23, 2024 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C02F2201/006 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 709 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 45 |
| 2017 | 50 |
| 2018 | 93 |
| 2019 | 98 |
| 2020 | 84 |
| 2021 | 83 |
| 2022 | 65 |
| 2023 | 61 |
| 2024 | 44 |
| 2025 | 42 |
| 2026 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flow control device for filter as you pour system
US-2016376163-A1 · Dec 29, 2016 · US
Water purification system
US-2016361673-A1 · Dec 15, 2016 · US
Replaceable water filter and memory device for appliance
US-2016354715-A1 · Dec 8, 2016 · US
Method for disinfecting a fluid with a palladium-doped tungsten trioxide photo-catalyst
US-2016355409-A1 · Dec 8, 2016 · US
Media cartridge with linear, adjustable bypass
US-2016353920-A1 · Dec 8, 2016 · US
Smart water filter system
US-2016340207-A1 · Nov 24, 2016 · US
Filter assembly
US-2016326012-A1 · Nov 10, 2016 · US
Filter cartridge
US-9469551-B2 · Oct 18, 2016 · US
Docking station for a beverage dispenser having a reservoir
US-9463972-B2 · Oct 11, 2016 · US
Water filters for gravity-fed water filter pitchers
US-2016244341-A1 · Aug 25, 2016 · US
Gravity feed water treatment system
US-2016236958-A1 · Aug 18, 2016 · US
Filter cartridge
US-2016220925-A1 · Aug 4, 2016 · US
Filtration system
US-2016214042-A1 · Jul 28, 2016 · US
Integrated composite filter and water purification system having the same
US-2016175746-A1 · Jun 23, 2016 · US
Gravity filter designs configured for increased residence time
US-2016167981-A1 · Jun 16, 2016 · US
System for treating waste water containing at least one cosmetic product, and related arrangement and method
US-2016159665-A1 · Jun 9, 2016 · US
Filter unit with flow regulator
US-9359224-B2 · Jun 7, 2016 · US
Water purification cartridge and water purifier
US-2016136545-A1 · May 19, 2016 · US
Methods and apparatus for controlling water hardness
US-2016137538-A1 · May 19, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2201/006?
- CPC C02F2201/006 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C02F2201/006 (Chemistry & Metallurgy)?
- Our database includes 709 publications tagged with this CPC code.
- Is patent activity under CPC C02F2201/006 growing?
- Publication counts under this code: 44 in 2024 vs 42 in 2025 (latest complete years).