Multi-layer porous polymeric membrane and related filters and methods
US-2025229202-A1 · Jul 17, 2025 · US
connected in series
connected in series · 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 | B01D27/146 |
| Official title | {connected in series} |
| Display label | connected in series |
| Total patents | 27 |
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 | 3 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Disposable filter capsule for a filtration device
US-2025001364-A1 · Jan 2, 2025 · US
Disposable filter capsule for a filtration device
US-12121863-B2 · Oct 22, 2024 · US
Refrigerator that guides residual water from a filter mounting portion to another filter mounting portion
US-11767231-B2 · Sep 26, 2023 · US
Fuel system having pumping and filtration fuel module and flow housing for same
US-11680548-B2 · Jun 20, 2023 · US
Filter device
US-RE49531-E · May 16, 2023 · US
Filter media, filter cartridge containing filter media, and method of filtering water
US-2023002245-A1 · Jan 5, 2023 · US
Filter media, filter cartridge containing filter media, and method of filtering water
US-2023002246-A1 · Jan 5, 2023 · US
Fuel system having pumping and filtration fuel module and flow housing for same
US-2022186695-A1 · Jun 16, 2022 · US
Water filter
US-2022176280-A1 · Jun 9, 2022 · US
Fuel system having pumping and filtration fuel module and flow housing for same
US-11268482-B2 · Mar 8, 2022 · US
Fuel system having pumping and filtration fuel module and flow housing for same
US-2021324821-A1 · Oct 21, 2021 · US
Filter device
US-RE48745-E · Sep 21, 2021 · US
Refrigerator
US-2021147253-A1 · May 20, 2021 · US
Disposable filter capsule for a filtration device
US-2020164289-A1 · May 28, 2020 · US
Water separation filter
US-10561968-B2 · Feb 18, 2020 · US
Water purification system
US-2019382297-A1 · Dec 19, 2019 · US
Water purifier
US-2018185774-A1 · Jul 5, 2018 · US
Filter device
US-9810373-B2 · Nov 7, 2017 · US
Refrigerator
US-9651296-B2 · May 16, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D27/146?
- CPC B01D27/146 is the Cooperative Patent Classification code for “connected in series.”
- How many patents are filed under CPC B01D27/146 (connected in series)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC B01D27/146 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).