Method and device for producing phosphorus
US-12559372-B2 · Feb 24, 2026 · US
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Oxides of phosphorus
Oxides of phosphorus · 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 | C01B25/12 |
| Official title | Oxides of phosphorus |
| Display label | Oxides of phosphorus |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Phosphorus oxide and phosphoric acid production processes
US-2026001763-A1 · Jan 1, 2026 · US
Phosphorus oxide and phosphoric acid production processes
US-12441616-B2 · Oct 14, 2025 · US
Total heat energy recovery system for furnace-process phosphoric acid
US-12398039-B2 · Aug 26, 2025 · US
Binary substituted vanadium phosphate electrode material
US-2024258519-A1 · Aug 1, 2024 · US
Method for producing lithium difluorophosphate
US-11738998-B2 · Aug 29, 2023 · US
Flotation reagents from acidic olive oil
US-11638923-B1 · May 2, 2023 · US
Method and device for producing phosphorus
US-2023038150-A1 · Feb 9, 2023 · US
Total Heat Energy Recovery System For Furnace-Process Phosphoric Acid
US-2022281747-A1 · Sep 8, 2022 · US
Phosphorus oxide and phosphoric acid production processes
US-2022212932-A1 · Jul 7, 2022 · US
Phosphorus oxide and phosphoric acid production processes
US-11312627-B2 · Apr 26, 2022 · US
Use of long-chain phosphoric acid esters in aqueous polyurethane dispersions
US-2021403678-A1 · Dec 30, 2021 · US
Phosphorus oxide and phosphoric acid production processes
US-2020156944-A1 · May 21, 2020 · US
Process for reducing propylene chlorohydrin in hydroxypropylated products
US-10626192-B2 · Apr 21, 2020 · US
Positive electrode active material, positive electrode, battery, battery pack, electronic device, electric vehicle, power storage device, and power system
US-10559810-B2 · Feb 11, 2020 · US
Method for producing lithium difluorophosphate
US-2019389726-A1 · Dec 26, 2019 · US
Phosphorous trifluoride co-gas for carbon implants
US-10256069-B2 · Apr 9, 2019 · US
Process for reducing propylene chlorohydrin in hydroxypropylated products
US-2018319902-A1 · Nov 8, 2018 · US
Phosphorous trifluoride co-gas for carbon implants
US-2018144904-A1 · May 24, 2018 · US
Positive electrode active material, positive electrode, battery, battery pack, electronic device, electric vehicle, power storage device, and power system
US-2017207444-A1 · Jul 20, 2017 · US