Oil filter/liquid indicator assembly
US-2018347631-A1 · Dec 6, 2018 · US
not arranged concentrically
not arranged concentrically · 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 | B01D2201/303 |
| Official title | not arranged concentrically |
| Display label | not arranged concentrically |
| Total patents | 237 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 14 |
| 2017 | 13 |
| 2018 | 22 |
| 2019 | 13 |
| 2020 | 29 |
| 2021 | 17 |
| 2022 | 34 |
| 2023 | 29 |
| 2024 | 31 |
| 2025 | 16 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter assembly and a refrigerator appliance
US-10126043-B2 · Nov 13, 2018 · US
Fuel manifold with reduced maintenance
US-2018313310-A1 · Nov 1, 2018 · US
Filter housing with end cap seal
US-10112133-B2 · Oct 30, 2018 · US
Anti-drip filter assembly
US-2018304181-A1 · Oct 25, 2018 · US
Filter, filter device, and method of use
US-2018280848-A1 · Oct 4, 2018 · US
Filter coupling device and substrate treating apparatus provided therewith
US-2018272257-A1 · Sep 27, 2018 · US
Filter system
US-2018229163-A1 · Aug 16, 2018 · US
Filter system
US-2018221794-A1 · Aug 9, 2018 · US
Interlock device
US-10005012-B2 · Jun 26, 2018 · US
Fuel filter for diesel engine
US-10006421-B2 · Jun 26, 2018 · US
Reverse osmosis push filter with floating key lock
US-2018169548-A1 · Jun 21, 2018 · US
Filter assembly and a refrigerator appliance
US-9987572-B2 · Jun 5, 2018 · US
Filter housing with filter key attachment
US-2018147508-A1 · May 31, 2018 · US
Filter including rfid tag
US-2018117508-A1 · May 3, 2018 · US
Device for forming a head part of a liquid treatment apparatus and liquid treatment apparatus
US-2018088600-A1 · Mar 29, 2018 · US
Module for connecting flow tubes, and water purifier having same
US-2018078884-A1 · Mar 22, 2018 · US
Push filter with floating key lock
US-9901852-B2 · Feb 27, 2018 · US
Strainer assembly for a fluid tank
US-2018038394-A1 · Feb 8, 2018 · US
Water filter assembly and refrigeration appliance equipped therewith
US-2018008917-A1 · Jan 11, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2201/303?
- CPC B01D2201/303 is the Cooperative Patent Classification code for “not arranged concentrically.”
- How many patents are filed under CPC B01D2201/303 (not arranged concentrically)?
- Our database includes 237 publications tagged with this CPC code.
- Is patent activity under CPC B01D2201/303 growing?
- Publication counts under this code: 31 in 2024 vs 16 in 2025 (latest complete years).