Disk-Pack Turbine
US-2024001264-A1 · Jan 4, 2024 · US
by using a cyclone
by using a cyclone · 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 | B01D21/267 |
| Official title | {by using a cyclone} |
| Display label | by using a cyclone |
| Total patents | 248 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 20 |
| 2017 | 29 |
| 2018 | 40 |
| 2019 | 15 |
| 2020 | 26 |
| 2021 | 23 |
| 2022 | 20 |
| 2023 | 19 |
| 2024 | 19 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cylindrical filter screen with tensioning mechanism
US-2017368481-A1 · Dec 28, 2017 · US
Method for purifying easily polymerizable substance
US-2017354900-A1 · Dec 14, 2017 · US
Fluid separation systems and methods
US-9821252-B2 · Nov 21, 2017 · US
Method and a device for separating a multiphasic liquid
US-9797233-B2 · Oct 24, 2017 · US
Dewatering system
US-9758417-B2 · Sep 12, 2017 · US
Fitment
US-D796633-S · Sep 5, 2017 · US
Modular Pressure Control and Drilling Waste Management Apparatus for Subterranean Borehole
US-2017247958-A1 · Aug 31, 2017 · US
System For Removing Salt From A Rich Mono Ethylene Glycol Stream
US-2017233317-A1 · Aug 17, 2017 · US
Filter assembly
US-D793523-S · Aug 1, 2017 · US
Filter assembly
US-D793522-S · Aug 1, 2017 · US
Separator and method of separation
US-9714561-B2 · Jul 25, 2017 · US
Filter
US-D792942-S · Jul 25, 2017 · US
Sand separator vessel perforated replaceable insert apparatus and method
US-2017128958-A1 · May 11, 2017 · US
Starch Settling Recovery System
US-2017081426-A1 · Mar 23, 2017 · US
Control sub-system and related method of controlling electric machine in fluid extraction system
US-2017077847-A1 · Mar 16, 2017 · US
Connection assembly
US-2017074524-A1 · Mar 16, 2017 · US
Debris separator
US-2017065986-A1 · Mar 9, 2017 · US
Joint support system for hydrocyclone liner
US-9573141-B2 · Feb 21, 2017 · US
Hydroclone with improved cleaning assembly
US-9527091-B2 · Dec 27, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D21/267?
- CPC B01D21/267 is the Cooperative Patent Classification code for “by using a cyclone.”
- How many patents are filed under CPC B01D21/267 (by using a cyclone)?
- Our database includes 248 publications tagged with this CPC code.
- Is patent activity under CPC B01D21/267 growing?
- Publication counts under this code: 19 in 2024 vs 12 in 2025 (latest complete years).