Air filtration cassette, an air filter and a filter arrangement
US-12558646-B2 · Feb 24, 2026 · US
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Square or rectangular
Square or rectangular · 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 | B01D2201/605 |
| Official title | Square or rectangular |
| Display label | Square or rectangular |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 2 |
| 2020 | 6 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Residential hydronic magnetic, sediment, and air separation device with maintenance indicator
US-2025256223-A1 · Aug 14, 2025 · US
Closed bioprocessing device
US-12172108-B2 · Dec 24, 2024 · US
An air filtration cassette, an air filter and a filter arrangement
US-2024001276-A1 · Jan 4, 2024 · US
Cassette filter having a filter element with special folding
US-11745124-B2 · Sep 5, 2023 · US
Filter device
US-11305216-B2 · Apr 19, 2022 · US
Cassette filter having a filter element with special folding
US-2022062800-A1 · Mar 3, 2022 · US
Closed Bioprocessing Device
US-2021322901-A1 · Oct 21, 2021 · US
Mobile wireless drive storage for mobile phone used as car dashboard camera
US-10819944-B2 · Oct 27, 2020 · US
Membrane stack and method for making the same
US-10780399-B2 · Sep 22, 2020 · US
High temperature filter assembly
US-10710014-B2 · Jul 14, 2020 · US
Filter device
US-2020206657-A1 · Jul 2, 2020 · US
Filtration media packs formed using a dissolvable material
US-2020139283-A1 · May 7, 2020 · US
Oil separating device and vacuum die casting apparatus
US-2020094168-A1 · Mar 26, 2020 · US
Oil system with clog resistant oil filter
US-10385741-B2 · Aug 20, 2019 · US
Membrane casing and membrane component
US-10343936-B2 · Jul 9, 2019 · US
Membrane Stack and Method for Making the Same
US-2018353909-A1 · Dec 13, 2018 · US
Oil system with clog resistant oil filter
US-2018202330-A1 · Jul 19, 2018 · US
High temperature filter assembly
US-2018193784-A1 · Jul 12, 2018 · US
Mobile wireless drive storage for mobile phone used as car dashboard camera
US-2018176501-A1 · Jun 21, 2018 · US