Method and apparatus for improved mixing of solid, liquid, or gaseous materials and combinations thereof
US-9839884-B2 · Dec 12, 2017 · US
with propellers
with propellers · 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 | B01F27/91 |
| Official title | with propellers |
| Display label | with propellers |
| Total patents | 262 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 24 |
| 2017 | 30 |
| 2018 | 30 |
| 2019 | 30 |
| 2020 | 24 |
| 2021 | 16 |
| 2022 | 23 |
| 2023 | 17 |
| 2024 | 22 |
| 2025 | 16 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for stirring resin pellets
US-2017335072-A1 · Nov 23, 2017 · US
Hydrofoil impeller
US-2017306983-A1 · Oct 26, 2017 · US
Mixing systems, methods, and devices with extendible impellers
US-2017266632-A1 · Sep 21, 2017 · US
Gas spargers and related container systems
US-2017246603-A1 · Aug 31, 2017 · US
Improved process for treating aqueous mineral suspensions
US-2017247271-A1 · Aug 31, 2017 · US
Process for ethylene polymerization with improved ethylene feed system
US-9738735-B1 · Aug 22, 2017 · US
Photo-resistor draw devices
US-2017225137-A1 · Aug 10, 2017 · US
System and method for receiving a single-use vessel
US-2017216799-A1 · Aug 3, 2017 · US
Fluid mixing system with drive shaft steady support
US-9700857-B1 · Jul 11, 2017 · US
Controlling local fluid age in a stirred reactor
US-2017136436-A1 · May 18, 2017 · US
Heat exchanger system with flexible bag
US-2017088805-A1 · Mar 30, 2017 · US
Fluid condition monitoring using energized wave signals
US-2017087526-A1 · Mar 30, 2017 · US
Stirred tank reactor systems and methods of use
US-9540606-B2 · Jan 10, 2017 · US
Gas spargers and related container systems
US-2017001160-A1 · Jan 5, 2017 · US
Heat exchanger system with flexible bag
US-9528083-B2 · Dec 27, 2016 · US
Catalyst slurry preparation system and use thereof
US-9512245-B2 · Dec 6, 2016 · US
Packaging for a flexible container and transport unit
US-2016333300-A1 · Nov 17, 2016 · US
Crucible device and the use of the crucible device in lcd panel productions
US-2016310921-A1 · Oct 27, 2016 · US
Gas spargers and related container systems
US-9475012-B2 · Oct 25, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01F27/91?
- CPC B01F27/91 is the Cooperative Patent Classification code for “with propellers.”
- How many patents are filed under CPC B01F27/91 (with propellers)?
- Our database includes 262 publications tagged with this CPC code.
- Is patent activity under CPC B01F27/91 growing?
- Publication counts under this code: 22 in 2024 vs 16 in 2025 (latest complete years).