Extinguishing gas filtering device and electric current switchgear comprising such a filtering device
US-10522310-B2 · Dec 31, 2019 · US
Different types of filters
Different types of filters · 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 | B01D2267/40 |
| Official title | Different types of filters |
| Display label | Different types of filters |
| Total patents | 163 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 10 |
| 2017 | 16 |
| 2018 | 9 |
| 2019 | 24 |
| 2020 | 16 |
| 2021 | 28 |
| 2022 | 10 |
| 2023 | 15 |
| 2024 | 16 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter assembly
US-10512867-B2 · Dec 24, 2019 · US
Filter media, filter media packs, and filter elements
US-2019374897-A1 · Dec 12, 2019 · US
Filter elements; air cleaner; assembly; and, methods
US-10500533-B2 · Dec 10, 2019 · US
Foreign substance removal apparatus for gas turbine
US-10472991-B2 · Nov 12, 2019 · US
Pneumatic filter and filter element
US-10464005-B2 · Nov 5, 2019 · US
Apparatus and method for controlling display of epg information
US-2019314754-A1 · Oct 17, 2019 · US
Air-oil separator with two flow paths
US-2019308129-A1 · Oct 10, 2019 · US
Air-oil separator with first separator radially outward of matrix separator
US-2019308128-A1 · Oct 10, 2019 · US
Long-life air filter for automobiles and method of manufacturing the long-life air filter
US-10399026-B2 · Sep 3, 2019 · US
Device for separating overspray
US-2019247878-A1 · Aug 15, 2019 · US
Apparatus and method for controlling display of EPG information
US-10382715-B2 · Aug 13, 2019 · US
Dual in-series large and small droplet filters
US-2019201597-A1 · Jul 4, 2019 · US
Surgical evacuation system with a communication circuit for communication between a filter and a smoke evacuation device
US-2019201088-A1 · Jul 4, 2019 · US
Air Cleaner Arrangements; Components; and, Methods
US-2019193014-A1 · Jun 27, 2019 · US
Air purification system and method of assembling
US-10322811-B2 · Jun 18, 2019 · US
Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
US-2019111374-A1 · Apr 18, 2019 · US
Air cleaner arrangements; components; and methods
US-10245544-B2 · Apr 2, 2019 · US
Air filter system, air filter element and method for exchanging an air filter element
US-10245541-B2 · Apr 2, 2019 · US
Air cleaner arrangements; components; and, methods
US-2019076772-A1 · Mar 14, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D2267/40?
- CPC B01D2267/40 is the Cooperative Patent Classification code for “Different types of filters.”
- How many patents are filed under CPC B01D2267/40 (Different types of filters)?
- Our database includes 163 publications tagged with this CPC code.
- Is patent activity under CPC B01D2267/40 growing?
- Publication counts under this code: 16 in 2024 vs 12 in 2025 (latest complete years).