Engine oil system and a lid
US-11452953-B2 · Sep 27, 2022 · US
Closures, lids, caps or filter heads forming one element with the filtering element
Closures, lids, caps or filter heads forming one element with the filtering element · 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 | B01D2201/306 |
| Official title | Closures, lids, caps or filter heads forming one element with the filtering element |
| Display label | Closures, lids, caps or filter heads forming one element with the filtering element |
| Total patents | 102 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 8 |
| 2018 | 13 |
| 2019 | 10 |
| 2020 | 12 |
| 2021 | 8 |
| 2022 | 13 |
| 2023 | 12 |
| 2024 | 10 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Venting or degassing of filter devices and filtration systems
US-2022193614-A1 · Jun 23, 2022 · US
Tank device
US-2022106933-A1 · Apr 7, 2022 · US
Reverse osmosis filtering module and reverse osmosis filter comprising same
US-11266953-B2 · Mar 8, 2022 · US
Adapter for filter device and method of use
US-11241644-B2 · Feb 8, 2022 · US
Housing for filter element; filter element; methods of use and making
US-11207616-B2 · Dec 28, 2021 · US
Oil filter assembly
US-11199253-B2 · Dec 14, 2021 · US
Cooling device for power source for ship propulsion device
US-2021371071-A1 · Dec 2, 2021 · US
Adapter for filter device and method of use
US-2021316236-A1 · Oct 14, 2021 · US
Integral flow structure within a containment cover
US-2021170313-A1 · Jun 10, 2021 · US
Filter cover protection against external contamination
US-2021086110-A1 · Mar 25, 2021 · US
Filter device with coupling element
US-10926202-B2 · Feb 23, 2021 · US
Media purification devices having intergral flow controllers
US-2021024380-A1 · Jan 28, 2021 · US
An engine oil system and a lid
US-2020368650-A1 · Nov 26, 2020 · US
Filter interconnect utilizing correlated magnetic actuation for downstream system function
US-2020360844-A1 · Nov 19, 2020 · US
Filter interconnect utilizing correlated magnetic actuation for downstream system function
US-2020360931-A1 · Nov 19, 2020 · US
Media purification devices having integral flow controllers
US-10829396-B2 · Nov 10, 2020 · US
Filtration device
US-2020330907-A1 · Oct 22, 2020 · US
Filtration device
US-2020330908-A1 · Oct 22, 2020 · US
Reverse osmosis filtering module and reverse osmosis filter comprising same
US-2020298181-A1 · Sep 24, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2201/306?
- CPC B01D2201/306 is the Cooperative Patent Classification code for “Closures, lids, caps or filter heads forming one element with the filtering element.”
- How many patents are filed under CPC B01D2201/306 (Closures, lids, caps or filter heads forming one element with the filtering element)?
- Our database includes 102 publications tagged with this CPC code.
- Is patent activity under CPC B01D2201/306 growing?
- Publication counts under this code: 10 in 2024 vs 11 in 2025 (latest complete years).