Straight-line sewage treatment system for enhanced treatment of low c/n domestic sewage
US-2024092664-A1 · Mar 21, 2024 · US
Phosphorus compounds
Phosphorus compounds · 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 | C02F2101/105 |
| Official title | {Phosphorus compounds} |
| Display label | Phosphorus compounds |
| Total patents | 497 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 27 |
| 2016 | 25 |
| 2017 | 33 |
| 2018 | 28 |
| 2019 | 54 |
| 2020 | 57 |
| 2021 | 47 |
| 2022 | 59 |
| 2023 | 43 |
| 2024 | 56 |
| 2025 | 57 |
| 2026 | 11 |
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
Iron-functionalized alginate for phosphate and other contaminant removal and recovery from aqueous solutions
US-9815710-B2 · Nov 14, 2017 · US
Continuous electrokinetic dewatering of phosphatic clay suspensions
US-2017320018-A1 · Nov 9, 2017 · US
High temperature layered mixed-metal oxide materials with enhanced stability
US-2017266642-A1 · Sep 21, 2017 · US
Particulate Sorption Medium Prepared From Partially Decomposed Organic Matter
US-2017157592-A1 · Jun 8, 2017 · US
Device for purifying cropland effluents
US-2017121194-A1 · May 4, 2017 · US
Particulate sorption medium prepared from partially decomposed organic matter
US-9561489-B2 · Feb 7, 2017 · US
Sludge treatment system and sludge treatment method
US-2016368797-A1 · Dec 22, 2016 · US
Method for removing hydrogen phosphate from an aqueous solution using alpha zirconium phosphate
US-9517424-B2 · Dec 13, 2016 · US
Systems and methods for recovering ammonium and phosphorus from liquid effluents
US-2016347630-A1 · Dec 1, 2016 · US
Natural pyrrhotite biological filter and method for utilizing same to synchronously remove nitrate-nitrogen and phosphorus from water
US-2016311712-A1 · Oct 27, 2016 · US
Hydrothermal carbonization of sewage wastes
US-9475698-B2 · Oct 25, 2016 · US
Method for selective electrochemical removal of ions in water/wastewater
US-2016297695-A1 · Oct 13, 2016 · US
Enhanced peroxygen stability in multi-dispense taed-containing peroxygen solid
US-2016289606-A1 · Oct 6, 2016 · US
Method for selectively binding and separating phosphate anions
US-9434627-B2 · Sep 6, 2016 · US
Use of primary sludge for carbon source in an aerated-anoxic bioreactor system
US-9409807-B2 · Aug 9, 2016 · US
Water treatment method and apparatus therefor
US-9403705-B2 · Aug 2, 2016 · US
Method for recovering phosphorus-containing alternative fuels in cement production
US-9399592-B2 · Jul 26, 2016 · US
Method of producing polyaniline zorcornia nanocomposite and uses thereof
US-2016198717-A1 · Jul 14, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C02F2101/105?
- CPC C02F2101/105 is the Cooperative Patent Classification code for “Phosphorus compounds.”
- How many patents are filed under CPC C02F2101/105 (Phosphorus compounds)?
- Our database includes 497 publications tagged with this CPC code.
- Is patent activity under CPC C02F2101/105 growing?
- Publication counts under this code: 56 in 2024 vs 57 in 2025 (latest complete years).