Methods for Pollucite Flotation, Plagioclase Flotation, and Quartz Purification
US-2024359190-A1 · Oct 31, 2024 · US
containing nitrogen
containing nitrogen · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B03D1/01 |
| Official title | containing nitrogen |
| Display label | containing nitrogen |
| Total patents | 138 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 11 |
| 2017 | 13 |
| 2018 | 9 |
| 2019 | 12 |
| 2020 | 13 |
| 2021 | 16 |
| 2022 | 7 |
| 2023 | 14 |
| 2024 | 15 |
| 2025 | 11 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dithiocarbamate depressants, methods and uses thereof in froth flotation mineral separation
US-2024149277-A1 · May 9, 2024 · US
Enhanced foam fractionation of oil phase from aqueous/oil mixed phase via increased viscoelasticity
US-2019389741-A1 · Dec 26, 2019 · US
Collector compositions and methods of using same in mineral flotation processes
US-10478829-B2 · Nov 19, 2019 · US
Compositions and methods for selective separation of minerals from sulfide ores
US-2019336984-A1 · Nov 7, 2019 · US
Process to treat magnetite ore and collector composition
US-2019314828-A1 · Oct 17, 2019 · US
Enhanced foam fractionation of oil phase from aqueous/oil mixed phase via increased viscoelasticity
US-10435308-B2 · Oct 8, 2019 · US
Use of branched alcohols and alkoxylates thereof as secondary collectors
US-10376901-B2 · Aug 13, 2019 · US
Process to treat magnetite ore and collector composition
US-2019240677-A1 · Aug 8, 2019 · US
Cationic polymer selective depressants and use thereof in mineral ore purification methods
US-2019217311-A1 · Jul 18, 2019 · US
Flotation agent of thiol ether structure
US-2019151860-A1 · May 23, 2019 · US
Amine-aldehyde resins and uses thereof in separation processes
US-2019112424-A1 · Apr 18, 2019 · US
Composition of fatty acids and N-acyl derivatives of sarcosine for the improved flotation of nonsulfide minerals
US-10195614-B2 · Feb 5, 2019 · US
Amine-aldehyde resins and uses thereof in separation processes
US-10150839-B2 · Dec 11, 2018 · US
Flotation reagents and flotation processes utilizing same
US-10130956-B2 · Nov 20, 2018 · US
Ether amine compounds and use thereof as flotation collector
US-2018251603-A1 · Sep 6, 2018 · US
Cross-phase separation of nanowires and nanoparticles
US-9975178-B2 · May 22, 2018 · US
Composition Of Fatty Acids And N-Acyl Derivatives Of Sarcosine For The Improved Flotation Of Nonsulfide Minerals
US-2018104701-A1 · Apr 19, 2018 · US
Compositions and methods for selective separation of minerals from sulfide ores
US-2018099293-A1 · Apr 12, 2018 · US
Depressants for Mineral Ore Flotation
US-2018071752-A1 · Mar 15, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B03D1/01?
- CPC B03D1/01 is the Cooperative Patent Classification code for “containing nitrogen.”
- How many patents are filed under CPC B03D1/01 (containing nitrogen)?
- Our database includes 138 publications tagged with this CPC code.
- Is patent activity under CPC B03D1/01 growing?
- Publication counts under this code: 15 in 2024 vs 11 in 2025 (latest complete years).