Compositions and methods for froth flotation of mineral ores
US-2025345805-A1 · Nov 13, 2025 · US
Operations & Transport
Operations & Transport · 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 | B03D1/021 |
| Official title | — |
| Display label | Operations & Transport (mapped technology topic) |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 8 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Novel Cationic Collectors for Improving a Process for Froth Flotation of Silicates
US-2023302464-A1 · Sep 28, 2023 · US
Use of alkoxylated amines as collector agents for ore beneficiation
US-11648569-B2 · May 16, 2023 · US
Flotation reagents from acidic olive oil
US-11638923-B1 · May 2, 2023 · US
Method For Flotation Of A Phosphate-Containing Ore
US-2023066944-A1 · Mar 2, 2023 · US
Collector compositions containing a n-acylated amino acid and process to treat non-sulfidic ores
US-2022176386-A1 · Jun 9, 2022 · US
Mixture of fatty acids and alkylether phosphates as a collector for phosphate ore flotation
US-2022161276-A1 · May 26, 2022 · US
Beneficiation of phosphate from phosphate containing ores
US-2021197211-A1 · Jul 1, 2021 · US
Sulfonated modifiers for froth flotation
US-2021171759-A1 · Jun 10, 2021 · US
Sulfonated modifiers for froth flotation
US-2021155791-A1 · May 27, 2021 · US
Sulfonated modifiers for froth flotation
US-10961382-B2 · Mar 30, 2021 · US
Sulfonated modifiers for froth flotation
US-10927248-B2 · Feb 23, 2021 · US
Valve
US-10888876-B2 · Jan 12, 2021 · US
Compositions and methods for reverse froth flotation of phosphate ores
US-10737281-B2 · Aug 11, 2020 · US
A valve
US-2020164386-A1 · May 28, 2020 · US
Synthesis of new anionic surfactants and their use as collectors in froth flotation of non-sulphidic ores
US-10543493-B2 · Jan 28, 2020 · US
Use of branched alcohols and alkoxylates thereof as secondary collectors
US-10376901-B2 · Aug 13, 2019 · US
Use of alkoxylated amines as collector agents for ore beneficiation
US-2019046994-A1 · Feb 14, 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
Compositions and methods for reverse froth flotation of phosphate ores
US-2018345297-A1 · Dec 6, 2018 · US
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B03D1/021?
- CPC B03D1/021 is the Cooperative Patent Classification code for “Operations & Transport.”
- How many patents are filed under CPC B03D1/021 (Operations & Transport)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC B03D1/021 growing?
- Publication counts under this code: 4 in 2023 vs 1 in 2025 (latest complete years).