Advanced fuel filtration system with interlocking cartridge seal design
US-12576348-B2 · Mar 17, 2026 · US
End caps common to at least two filtering elements
End caps common to at least two filtering elements · 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 | B01D2201/298 |
| Official title | End caps common to at least two filtering elements |
| Display label | End caps common to at least two filtering elements |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 8 |
| 2018 | 7 |
| 2019 | 4 |
| 2020 | 11 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oil Filter
US-2026021428-A1 · Jan 22, 2026 · US
Heat activated adhesive for filters that may contain multiple elements
US-2025196033-A1 · Jun 19, 2025 · US
Filtration and deaeration system
US-12274958-B2 · Apr 15, 2025 · US
Spin-on fluid treatment device and methods
US-2025099885-A1 · Mar 27, 2025 · US
Heat activated adhesive for filters that may contain multiple elements
US-12257536-B2 · Mar 25, 2025 · US
Suction strainer
US-2025018319-A1 · Jan 16, 2025 · US
Spin-on fluid treatment device and methods
US-12161959-B2 · Dec 10, 2024 · US
Filter Device
US-2024226781-A1 · Jul 11, 2024 · US
Intermediate cover of a filter housing of a filter for purifying liquid fluids and filter insert, filter and use
US-11839843-B2 · Dec 12, 2023 · US
Chambered parallel flow dual filter
US-11684875-B2 · Jun 27, 2023 · US
Heat activated adhesive for filters that may contain multiple elements
US-2022387914-A1 · Dec 8, 2022 · US
Filtration and deaeration system
US-2022362687-A1 · Nov 17, 2022 · US
Obround filter element
US-11459986-B2 · Oct 4, 2022 · US
Filter device
US-11285409-B2 · Mar 29, 2022 · US
Spin-on fluid treatment device and methods
US-2021331100-A1 · Oct 28, 2021 · US
Spin-on fluid treatment device and methods
US-11014026-B2 · May 25, 2021 · US
Chambered parallel flow dual filter
US-2021093988-A1 · Apr 1, 2021 · US
Intermediate Cover of a Filter Housing of a Filter for Purifying Liquid Fluids and Filter Insert, Filter and Use
US-2021069620-A1 · Mar 11, 2021 · US
Fuel filter element electrical grounding
US-10828584-B2 · Nov 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2201/298?
- CPC B01D2201/298 is the Cooperative Patent Classification code for “End caps common to at least two filtering elements.”
- How many patents are filed under CPC B01D2201/298 (End caps common to at least two filtering elements)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC B01D2201/298 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).