Method and system for pre-treating high strength wastewater
US-2024182343-A1 · Jun 6, 2024 · US
using pure oxygen or oxygen rich gas
using pure oxygen or oxygen rich gas · 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 | C02F1/727 |
| Official title | {using pure oxygen or oxygen rich gas} |
| Display label | using pure oxygen or oxygen rich gas |
| Total patents | 97 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 8 |
| 2017 | 8 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 10 |
| 2021 | 13 |
| 2022 | 8 |
| 2023 | 11 |
| 2024 | 11 |
| 2025 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for recovering nutrients from a high nitrogenous liquid waste
US-2024083791-A1 · Mar 14, 2024 · US
Method for Processing Wastewater Having Organics Even Together with High-Concentration Ammonia-Nitrogen and Apparatus Thereof
US-2022112106-A1 · Apr 14, 2022 · US
Intelligent oxygen control in sea cages
US-2021345590-A1 · Nov 11, 2021 · US
Process for the treatment of waste water
US-11168011-B2 · Nov 9, 2021 · US
Advanced oxidation process for ex-situ groundwater remediation
US-11161762-B2 · Nov 2, 2021 · US
Methods for wastewater treatment
US-2021331956-A1 · Oct 28, 2021 · US
Method for treating production water from a method for enhanced oil and/or gas recovery
US-11046601-B2 · Jun 29, 2021 · US
Process and installation for treating a waste lye of a lye scrub
US-2021188673-A1 · Jun 24, 2021 · US
Hydrogen peroxide water manufacturing device
US-2021179455-A1 · Jun 17, 2021 · US
Singlet oxygen generating device for selective destruction of pathogens
US-2021138258-A1 · May 13, 2021 · US
Substrate processing apparatus, process fluid treating apparatus, and ozone decomposition method
US-2021114902-A1 · Apr 22, 2021 · US
Photoelectrochemical cell for wastewater treatment and method of fabricating the photoelectrochemical cell
US-10941055-B2 · Mar 9, 2021 · US
Process and system for subcritical oxidation of water-borne organic contaminants
US-2021053852-A1 · Feb 25, 2021 · US
Process and device for treating a waste lye
US-2021053853-A1 · Feb 25, 2021 · US
Process for treating a sulfide-containing waste lye
US-2021053854-A1 · Feb 25, 2021 · US
Process and system for subcritical oxidation of water-borne organic contaminants
US-10858270-B2 · Dec 8, 2020 · US
Process for the treatment of a phosphite-containing waste stream
US-2020354304-A1 · Nov 12, 2020 · US
Process for the treatment of waste water
US-2020331782-A1 · Oct 22, 2020 · US
In-situ delivery systems for reaction product abatement in electrochemical cells
US-10800678-B2 · Oct 13, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F1/727?
- CPC C02F1/727 is the Cooperative Patent Classification code for “using pure oxygen or oxygen rich gas.”
- How many patents are filed under CPC C02F1/727 (using pure oxygen or oxygen rich gas)?
- Our database includes 97 publications tagged with this CPC code.
- Is patent activity under CPC C02F1/727 growing?
- Publication counts under this code: 11 in 2024 vs 10 in 2025 (latest complete years).