Sustainable, facile separation of the molten carbonate electrolysis cathode product
US-2021277528-A1 · Sep 9, 2021 · US
Filter housing constructions
Filter housing constructions · 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 | B01D2201/30 |
| Official title | Filter housing constructions |
| Display label | Filter housing constructions |
| Total patents | 115 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 5 |
| 2018 | 8 |
| 2019 | 9 |
| 2020 | 20 |
| 2021 | 18 |
| 2022 | 14 |
| 2023 | 13 |
| 2024 | 8 |
| 2025 | 12 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sustainable, facile separation of the molten carbonate electrolysis cathode product
US-2021230758-A1 · Jul 29, 2021 · US
Pressure control device
US-11065564-B2 · Jul 20, 2021 · US
Filter element assembly and water purifier
US-2021077929-A1 · Mar 18, 2021 · US
Pressure control device
US-10946314-B2 · Mar 16, 2021 · US
Oil filter systems
US-10941682-B2 · Mar 9, 2021 · US
Systems and Methods for Purifying Solvents
US-2021060526-A1 · Mar 4, 2021 · US
Cast filter assembly-modular design
US-10926205-B2 · Feb 23, 2021 · US
Electromagnet interface for a water filter assembly
US-10905989-B2 · Feb 2, 2021 · US
Water ejecting apparatus
US-2021001253-A1 · Jan 7, 2021 · US
Water ejecting apparatus
US-2021002121-A1 · Jan 7, 2021 · US
Fuel filter
US-2020406176-A1 · Dec 31, 2020 · US
Fuel filter
US-2020406177-A1 · Dec 31, 2020 · US
Fuel water separator filter
US-2020391146-A1 · Dec 17, 2020 · US
Pressure control device
US-10859171-B2 · Dec 8, 2020 · US
Filtration device comprising atomic quantum clusters
US-2020368657-A1 · Nov 26, 2020 · US
Wall Mounting System
US-2020306673-A1 · Oct 1, 2020 · US
Fuel water separator filter
US-10774798-B2 · Sep 15, 2020 · US
Pressure control device
US-2020276524-A1 · Sep 3, 2020 · US
Pressure control device
US-2020278036-A1 · Sep 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2201/30?
- CPC B01D2201/30 is the Cooperative Patent Classification code for “Filter housing constructions.”
- How many patents are filed under CPC B01D2201/30 (Filter housing constructions)?
- Our database includes 115 publications tagged with this CPC code.
- Is patent activity under CPC B01D2201/30 growing?
- Publication counts under this code: 8 in 2024 vs 12 in 2025 (latest complete years).