Electronic device and method for detecting filter status
US-12546715-B2 · Feb 10, 2026 · US
Filter condition indicators
Filter condition indicators · 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 | B01D27/101 |
| Official title | {Filter condition indicators} |
| Display label | Filter condition indicators |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 2 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A filter medium contamination detection structure, a filter device, and a filter with abnormal warning function
US-2025050246-A1 · Feb 13, 2025 · US
Security system for fluid filtration device
US-2025001337-A1 · Jan 2, 2025 · US
Electronic device and method for detecting filter status
US-2024393240-A1 · Nov 28, 2024 · US
Security system for fluid filtration device
US-12115477-B2 · Oct 15, 2024 · US
Security system for fluid filtration device
US-2022305414-A1 · Sep 29, 2022 · US
Security system for fluid filtration device
US-11406922-B2 · Aug 9, 2022 · US
Filtering device and control system
US-11154797-B2 · Oct 26, 2021 · US
Disposable filter including an integrated sensor assembly
US-11097210-B2 · Aug 24, 2021 · US
Fluid quality monitoring and filtration system
US-10688422-B2 · Jun 23, 2020 · US
Filtering device and control system
US-2020147523-A1 · May 14, 2020 · US
Identification of filter media within a filtration system
US-10625186-B2 · Apr 21, 2020 · US
Security system for fluid filtration device
US-2020047094-A1 · Feb 13, 2020 · US
Fluid quality monitoring and filtration system
US-2019366246-A1 · Dec 5, 2019 · US
Fluid quality monitoring and filtration system
US-10478762-B2 · Nov 19, 2019 · US
Filtering element
US-10307699-B2 · Jun 4, 2019 · US
Filter system including integrated diagnostics
US-2019083909-A1 · Mar 21, 2019 · US
Disposable filter including an integrated sensor assembly
US-2019083912-A1 · Mar 21, 2019 · US
Disposable filter with an accessory port
US-2019083908-A1 · Mar 21, 2019 · US
Identificatioin of filter media within a filtration system
US-2019054401-A1 · Feb 21, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D27/101?
- CPC B01D27/101 is the Cooperative Patent Classification code for “Filter condition indicators.”
- How many patents are filed under CPC B01D27/101 (Filter condition indicators)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC B01D27/101 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).