Air filter unit and use of the air filter unit in a motor vehicle
US-2025196158-A1 · Jun 19, 2025 · US
characterised by presence of stationary tube electrodes
characterised by presence of stationary tube electrodes · 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 | B03C3/06 |
| Official title | characterised by presence of stationary tube electrodes |
| Display label | characterised by presence of stationary tube electrodes |
| Total patents | 54 |
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 | 9 |
| 2018 | 5 |
| 2019 | 9 |
| 2020 | 7 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air filter unit
US-2025196159-A1 · Jun 19, 2025 · US
Combustion apparatus and method of making a combustion apparatus
US-2025099894-A1 · Mar 27, 2025 · US
Air filtering device for an air conditioner
US-2025025887-A1 · Jan 23, 2025 · US
Electrostatic binning precipitator
US-2025018402-A1 · Jan 16, 2025 · US
Electrostatic particle collector
US-12194475-B2 · Jan 14, 2025 · US
Portable ionization unit for attachment to an overhead airflow nozzle
US-12138637-B2 · Nov 12, 2024 · US
Combustion apparatus and method of making a combustion apparatus
US-12134066-B2 · Nov 5, 2024 · US
Multi-use dust mitigation system
US-12006074-B2 · Jun 11, 2024 · US
Electrostatic particle collector
US-2024024897-A1 · Jan 25, 2024 · US
Refrigerant regenerating apparatus
US-11719475-B2 · Aug 8, 2023 · US
Electrostatic precipitator
US-2023211357-A1 · Jul 6, 2023 · US
Multifunctional air pollution reduction device
US-2023001428-A1 · Jan 5, 2023 · US
Device for realizing surface cleaning of optical element by ion wind and electrostatic coupling
US-2022397757-A1 · Dec 15, 2022 · 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
Refrigerant regenerating apparatus
US-2022065508-A1 · Mar 3, 2022 · US
Electrostatic precipitator
US-2022040706-A1 · Feb 10, 2022 · US
Air vent
US-11103881-B2 · Aug 31, 2021 · US
Cylindrical IFD filter
US-10843206-B2 · Nov 24, 2020 · US
Method of increasing particulate size
US-2020338492-A1 · Oct 29, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B03C3/06?
- CPC B03C3/06 is the Cooperative Patent Classification code for “characterised by presence of stationary tube electrodes.”
- How many patents are filed under CPC B03C3/06 (characterised by presence of stationary tube electrodes)?
- Our database includes 54 publications tagged with this CPC code.
- Is patent activity under CPC B03C3/06 growing?
- Publication counts under this code: 4 in 2024 vs 6 in 2025 (latest complete years).