Water treatment method and water treatment apparatus
US-2024383788-A1 · Nov 21, 2024 · US
Liquid flow rate
Liquid flow rate · 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 | C02F2209/40 |
| Official title | Liquid flow rate |
| Display label | Liquid flow rate |
| Total patents | 1,449 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 57 |
| 2016 | 84 |
| 2017 | 95 |
| 2018 | 110 |
| 2019 | 132 |
| 2020 | 147 |
| 2021 | 155 |
| 2022 | 176 |
| 2023 | 144 |
| 2024 | 122 |
| 2025 | 169 |
| 2026 | 58 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Water Treatment Unit Comprising a Plurality of Filtration Devices
US-2024308884-A1 · Sep 19, 2024 · US
Grey water system
US-2024051852-A1 · Feb 15, 2024 · US
Multi-stage immersion-type membrane separation device and membrane separation method
US-2015353396-A1 · Dec 10, 2015 · US
Humidification-dehumidifaction desalination system
US-2015353377-A1 · Dec 10, 2015 · US
Packed bed bioreactor for biofouling control of reverse osmosis and nanofiltration membranes
US-9206059-B2 · Dec 8, 2015 · US
Ultraviolet Water Disinfection System
US-2015336810-A1 · Nov 26, 2015 · US
Water treatment system
US-2015336829-A1 · Nov 26, 2015 · US
Biohydrochemical enhancement structure for stream-water treatment
US-2015337511-A1 · Nov 26, 2015 · US
Adaptive inductive power supply
US-9190874-B2 · Nov 17, 2015 · US
Method for removing drugs from waste water using neutralized bauxite residue
US-9187342-B2 · Nov 17, 2015 · US
Process for removing hydrocarbons from a body of water by means of selective permeation, and relative apparatus
US-2015321925-A1 · Nov 12, 2015 · US
Fresh water generation method (as amended)
US-2015321928-A1 · Nov 12, 2015 · US
Systems and methods for monitoring and controlling desalting in a crude distillation unit
US-9181499-B2 · Nov 10, 2015 · US
System for reducing emission of nitrous oxide during sewage treatment
US-2015315050-A1 · Nov 5, 2015 · US
System for cleaning membrane, and method for cleaning membrane using same
US-2015306544-A1 · Oct 29, 2015 · US
Apparatus and method for treating ballast water
US-2015307372-A1 · Oct 29, 2015 · US
Method and Device for Obtaining Purified Water
US-2015298997-A1 · Oct 22, 2015 · US
Techniques for agglomerating mature fine tailing by injecting a polymer in a process flow
US-2015290608-A1 · Oct 15, 2015 · US
Method for treating ballast water and device for treating ballast water used therefor
US-2015274563-A1 · Oct 1, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2209/40?
- CPC C02F2209/40 is the Cooperative Patent Classification code for “Liquid flow rate.”
- How many patents are filed under CPC C02F2209/40 (Liquid flow rate)?
- Our database includes 1,449 publications tagged with this CPC code.
- Is patent activity under CPC C02F2209/40 growing?
- Publication counts under this code: 122 in 2024 vs 169 in 2025 (latest complete years).