Separator apparatus and feed arrangement for increased capacity
US-12458980-B2 · Nov 4, 2025 · US
Upward current classifiers
Upward current classifiers · 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 | B03B5/623 |
| Official title | {Upward current classifiers} |
| Display label | Upward current classifiers |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 8 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Membrane spargers for gravity separators and flotation machines
US-2024375123-A1 · Nov 14, 2024 · US
Purification of quartz powders by removal of microparticles of refractory materials
US-11878937-B2 · Jan 23, 2024 · US
Separator apparatus and feed arrangement for increased capacity
US-2022362785-A1 · Nov 17, 2022 · US
Bottom section for being connected to an assembly with plate settler, and assembly with plate settler
US-11090583-B2 · Aug 17, 2021 · US
Purification of quartz powders by removal of microparticles of refractory materials
US-2021009461-A1 · Jan 14, 2021 · US
Hydraulic classifiers
US-10589291-B2 · Mar 17, 2020 · US
Bottom section for being connected to an assembly with plate settler, and assembly with plate settler
US-2020016515-A1 · Jan 16, 2020 · US
Gravity separation device
US-10507471-B2 · Dec 17, 2019 · US
Classifier cleaning device
US-10350610-B2 · Jul 16, 2019 · US
Hydraulic classifiers
US-10279355-B2 · May 7, 2019 · US
Hydraulic classifiers
US-2019091698-A1 · Mar 28, 2019 · US
Gravity separation device
US-2018280991-A1 · Oct 4, 2018 · US
Hydraulic classifiers
US-2018043370-A1 · Feb 15, 2018 · US
Classifier cleaning device
US-2017232448-A1 · Aug 17, 2017 · US
Method and system for separation of a polymer from multiple compounds
US-9604156-B2 · Mar 28, 2017 · US
Classifier
US-9579659-B2 · Feb 28, 2017 · US
Classifier
US-2016296942-A1 · Oct 13, 2016 · US
Classifier
US-9421554-B2 · Aug 23, 2016 · US
Lamella plates for a classifier
US-9415397-B1 · Aug 16, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B03B5/623?
- CPC B03B5/623 is the Cooperative Patent Classification code for “Upward current classifiers.”
- How many patents are filed under CPC B03B5/623 (Upward current classifiers)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC B03B5/623 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).