Collection unit for an air filtration system, air filtration system and method of producing a collection element
US-2025222467-A1 · Jul 10, 2025 · US
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in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity
in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity · 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 | B03C3/30 |
| Official title | in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity |
| Display label | in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity |
| Total patents | 23 |
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 | 5 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 3 |
| 2024 | 1 |
| 2025 | 5 |
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
Collection panels for bathroom aerosols
US-12296074-B2 · May 13, 2025 · US
Sanitization system
US-12281468-B2 · Apr 22, 2025 · US
Method for manufacturing electrostatic filter and film for pathogen inactivation
US-2025099977-A1 · Mar 27, 2025 · US
Air Filter and Method for Manufacturing an Air Filter
US-2024307808-A1 · Sep 19, 2024 · US
Collection panels for bathroom aerosols
US-2022313864-A1 · Oct 6, 2022 · US
Transfer unit and substrate treating apparatus including ihe same
US-11456198-B2 · Sep 27, 2022 · US
Sanitization system
US-2022112704-A1 · Apr 14, 2022 · US
Transfer unit and substrate treating apparatus including the same
US-2021057253-A1 · Feb 25, 2021 · US
Remote fluorination of fibrous filter webs
US-2020023299-A1 · Jan 23, 2020 · US
Remote fluorination of fibrous filter webs
US-10464001-B2 · Nov 5, 2019 · US
Compressed air-drying device
US-10105634-B2 · Oct 23, 2018 · US
Recirculation filter for an electronic enclosure
US-10010822-B2 · Jul 3, 2018 · US
Protective clothing
US-2017326485-A1 · Nov 16, 2017 · US
Remote fluorination of fibrous filter webs
US-2017080369-A1 · Mar 23, 2017 · US
Compressed air-drying device
US-2016375396-A1 · Dec 29, 2016 · US
Filter, filter laminate, and fiber product comprising filter or filter laminate
US-2016023147-A1 · Jan 28, 2016 · US
Recirculation filter for an electronic enclosure
US-9153291-B2 · Oct 6, 2015 · US
Recirculation filter for an electronic enclosure
US-2015196924-A1 · Jul 16, 2015 · US