Filter system and method
US-12453935-B2 · Oct 28, 2025 · US
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Centrifugal forces
Centrifugal forces · 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 | B03C3/15 |
| Official title | Centrifugal forces |
| Display label | Centrifugal forces |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sanitization system
US-2025215679-A1 · Jul 3, 2025 · US
Systems and methods for precleaning air using charge plates
US-2025128270-A1 · Apr 24, 2025 · US
Sanitization system
US-12281468-B2 · Apr 22, 2025 · US
System and method for extracting and separating botanical oils without the use of solvents
US-2024335764-A1 · Oct 10, 2024 · US
Filter system and method
US-2023311042-A1 · Oct 5, 2023 · US
Air filter for high-efficiency pm2.5 capture
US-2023277967-A1 · Sep 7, 2023 · US
Method and device for sorting fibers in suspension in an aerosol through the combination of electrostatic and centrifugal forces
US-11396025-B2 · Jul 26, 2022 · US
Air treatment system
US-2022184433-A1 · Jun 16, 2022 · US
Sanitization system
US-2022112704-A1 · Apr 14, 2022 · US
Cooking fume purification module and cooking fume exhaust device
US-10914474-B2 · Feb 9, 2021 · US
Curved classifiers and classification methods
US-10845288-B2 · Nov 24, 2020 · US
Method and device for sorting fibers in suspension in an aerosol through the combination of electrostatic and centrifugal forces
US-2020290058-A1 · Sep 17, 2020 · US
Electrocyclonic particle collector
US-10537900-B2 · Jan 21, 2020 · US
Cooking fume purification module and cooking fume exhaust device
US-2019113240-A1 · Apr 18, 2019 · US
Curved classifiers and classification methods
US-2019056300-A1 · Feb 21, 2019 · US
Electrocyclonic particle collector
US-2018126389-A1 · May 10, 2018 · US
Method and apparatus for separating solvent
US-9731299-B2 · Aug 15, 2017 · US
Electric dust collector of cyclone separator
US-2016375447-A1 · Dec 29, 2016 · US
Method and device for the concentration of multiple microorganisms and toxins from large liquid toxins
US-9522350-B2 · Dec 20, 2016 · US