Flangeless air filter
US-11872511-B2 · Jan 16, 2024 · US
Conical shape
Conical shape · 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 | B01D2275/201 |
| Official title | Conical shape |
| Display label | Conical shape |
| Total patents | 183 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 15 |
| 2017 | 10 |
| 2018 | 12 |
| 2019 | 21 |
| 2020 | 16 |
| 2021 | 18 |
| 2022 | 18 |
| 2023 | 20 |
| 2024 | 25 |
| 2025 | 7 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Round Filter Element, in Particular for Gas Filtration
US-2019308126-A1 · Oct 10, 2019 · US
Multi-modal multi-media air filtration system
US-2019282944-A1 · Sep 19, 2019 · US
Round Filter Element Having a Longitudinally Extending Cross-Sectional Shape
US-2019270045-A1 · Sep 5, 2019 · US
Filter housing, hollow filter element and filter
US-10239005-B2 · Mar 26, 2019 · US
Filter element, dust collector, and methods
US-2019083915-A1 · Mar 21, 2019 · US
Filter and filter media having reduced restriction
US-10232301-B2 · Mar 19, 2019 · US
Air Cleaner; Replaceable Filter Cartridges; and, Methods
US-2019015770-A1 · Jan 17, 2019 · US
Filter element, dust collector, and methods
US-10137396-B2 · Nov 27, 2018 · US
Self-supporting folded sheet material, filter elements, and methods
US-10105632-B2 · Oct 23, 2018 · US
Air filter with cantilever tab and engine air filter assembly incorporating same
US-2018245548-A1 · Aug 30, 2018 · US
Filter device, in particular air filter
US-10058810-B2 · Aug 28, 2018 · US
Air cleaner; replaceable filter cartridges; and, methods
US-10029199-B2 · Jul 24, 2018 · US
Filter elements with end cap features; element support assembly; and methods
US-9962641-B2 · May 8, 2018 · US
Air filter bag
US-9962642-B2 · May 8, 2018 · US
Air compressor dryer filter
US-2018117516-A1 · May 3, 2018 · US
Filter element, dust collector, and methods
US-2018093213-A1 · Apr 5, 2018 · US
Flangeless air filter
US-2018085695-A1 · Mar 29, 2018 · US
Secondary Element for a Filter System and Filter System with a Secondary Element
US-2018036667-A1 · Feb 8, 2018 · US
Cone air filter
US-2018036666-A1 · Feb 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2275/201?
- CPC B01D2275/201 is the Cooperative Patent Classification code for “Conical shape.”
- How many patents are filed under CPC B01D2275/201 (Conical shape)?
- Our database includes 183 publications tagged with this CPC code.
- Is patent activity under CPC B01D2275/201 growing?
- Publication counts under this code: 25 in 2024 vs 7 in 2025 (latest complete years).