Water treatment using a cryptocrystalline magnesite - bentonite clay composite
US-2017341959-A1 · Nov 30, 2017 · US
Time
Time · 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 | C02F2209/44 |
| Official title | Time |
| Display label | Time |
| Total patents | 359 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 29 |
| 2017 | 28 |
| 2018 | 24 |
| 2019 | 30 |
| 2020 | 25 |
| 2021 | 25 |
| 2022 | 45 |
| 2023 | 47 |
| 2024 | 47 |
| 2025 | 31 |
| 2026 | 17 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for flexible low-energy membrane-based liquid purification
US-2017334747-A1 · Nov 23, 2017 · US
Desalination system and desalination method
US-9822019-B2 · Nov 21, 2017 · US
Multiple tank high solids anaerobic digester
US-2017283833-A1 · Oct 5, 2017 · US
Antimicrobial capture system with carbon container
US-2017280752-A1 · Oct 5, 2017 · US
Processes and apparatuses for removal of carbon, phosphorus and nitrogen
US-9771281-B2 · Sep 26, 2017 · US
Outlet for shower or faucet head
US-9745206-B2 · Aug 29, 2017 · US
Outlet for shower or faucet head
US-2017239680-A1 · Aug 24, 2017 · US
Apparatus for preparing and dispensing a flocculant solution to dewatering an aqueous process stream
US-2017233268-A1 · Aug 17, 2017 · US
Multiple tank high solids anaerobic digester
US-9719111-B2 · Aug 1, 2017 · US
Water treatment method and water treatment device
US-2017203239-A1 · Jul 20, 2017 · US
Antimicrobial capture system with carbon container
US-9708198-B2 · Jul 18, 2017 · US
Ballast water treatment device
US-2017174531-A1 · Jun 22, 2017 · US
Method for water treatment by adsorption and filtration on a granular material bed
US-2017129785-A1 · May 11, 2017 · US
Sonicated biological hydrogen reactor
US-2017101616-A1 · Apr 13, 2017 · US
Processing of aqueous waste streams to remove naphthenic acids
US-2017088447-A1 · Mar 30, 2017 · US
Self-regenerating biofilter
US-2017088448-A1 · Mar 30, 2017 · US
A biofiltration system
US-2017057852-A1 · Mar 2, 2017 · US
Water treatment apparatus incorporating walnut shell filter media and a draft tube system
US-9580335-B2 · Feb 28, 2017 · US
System and Method for Treating Water with a Biological Based Biocide
US-2017008785-A1 · Jan 12, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2209/44?
- CPC C02F2209/44 is the Cooperative Patent Classification code for “Time.”
- How many patents are filed under CPC C02F2209/44 (Time)?
- Our database includes 359 publications tagged with this CPC code.
- Is patent activity under CPC C02F2209/44 growing?
- Publication counts under this code: 47 in 2024 vs 31 in 2025 (latest complete years).