Filter assemblies with unique shapes
US-12478905-B2 · Nov 25, 2025 · US
Flow characteristics of the filter
Flow characteristics of the filter · 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 | B01D2201/32 |
| Official title | Flow characteristics of the filter |
| Display label | Flow characteristics of the filter |
| Total patents | 65 |
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 | 1 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 13 |
| 2021 | 2 |
| 2022 | 10 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Perforated layer coalescer
US-12370469-B2 · Jul 29, 2025 · US
Filter unit with flow optimization
US-12343662-B2 · Jul 1, 2025 · US
Manifold assemblies for filters
US-12311292-B2 · May 27, 2025 · US
Filter for a Fluid Passageway
US-2025161846-A1 · May 22, 2025 · US
Perforated layer coalescer
US-2024173650-A1 · May 30, 2024 · US
Hot Tub Filterwell Dispersant Technology
US-2024175278-A1 · May 30, 2024 · US
Centrifugal debris pre-separator for turbine engine oil filter
US-11970960-B2 · Apr 30, 2024 · US
Substrate for liquid filter
US-11931700-B2 · Mar 19, 2024 · US
Perforated layer coalescer
US-11911714-B2 · Feb 27, 2024 · US
Perforated layer coalescer
US-11857894-B2 · Jan 2, 2024 · US
System and method for a filter system
US-11845020-B2 · Dec 19, 2023 · US
Filter assemblies with unique shapes
US-2023364542-A1 · Nov 16, 2023 · US
Liquid filter unit with laterally arranged filters, and method of operating thereof
US-2023182049-A1 · Jun 15, 2023 · US
Filter module for gravity-type water-purifying device and comprising the same
US-2023166203-A1 · Jun 1, 2023 · US
Filtration device
US-11529579-B2 · Dec 20, 2022 · US
Water purification tumbler
US-2022379247-A1 · Dec 1, 2022 · US
Filter unit with flow optimization
US-2022362690-A1 · Nov 17, 2022 · US
Process to make a ceramic filter for metal casting
US-2022355232-A1 · Nov 10, 2022 · US
System and method for a filter system
US-2022203274-A1 · Jun 30, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2201/32?
- CPC B01D2201/32 is the Cooperative Patent Classification code for “Flow characteristics of the filter.”
- How many patents are filed under CPC B01D2201/32 (Flow characteristics of the filter)?
- Our database includes 65 publications tagged with this CPC code.
- Is patent activity under CPC B01D2201/32 growing?
- Publication counts under this code: 6 in 2024 vs 9 in 2025 (latest complete years).