Twin-screw extruder
US-2026034525-A1 · Feb 5, 2026 · US
the helices closely surrounded by a casing
the helices closely surrounded by a casing · 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 | B01F27/722 |
| Official title | the helices closely surrounded by a casing |
| Display label | the helices closely surrounded by a casing |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electricity storage device electrode slurry manufacturing apparatus and method of manufacturing electricity storage device electrode slurry
US-2025288964-A1 · Sep 18, 2025 · US
Mixer vehicle with twin screw mixer
US-2024207800-A1 · Jun 27, 2024 · US
Continuous extruded solids discharge
US-11975297-B2 · May 7, 2024 · US
Generation of novel crispr genome editing agents using combinatorial chemistry
US-2024141325-A1 · May 2, 2024 · US
Continuous compounding systems and methods of use
US-11311844-B2 · Apr 26, 2022 · US
Package of light emitting diode and method for manufacturing the same
US-RE48617-E · Jun 29, 2021 · US
Apparatus and method for converting a sheet into a continuous strip
US-11027448-B2 · Jun 8, 2021 · US
Continuous extruded solids discharge
US-2020398235-A1 · Dec 24, 2020 · US
Multi-shaft kneading machine
US-10675600-B2 · Jun 9, 2020 · US
Continuous kneading device
US-10449498-B2 · Oct 22, 2019 · US
Continuous compounding systems and methods of use
US-2019255491-A1 · Aug 22, 2019 · US
Apparatus and method for converting a sheet into a continuous strip
US-2019111578-A1 · Apr 18, 2019 · US
Continuous cooker stretcher and methods of use thereof
US-10258017-B2 · Apr 16, 2019 · US
Method and Apparatus for Mixing Proppant-Containing Fluids
US-2019070575-A1 · Mar 7, 2019 · US
Integrated single and twin screw extruder
US-10124526-B2 · Nov 13, 2018 · US
Multi-shaft kneading machine
US-2018280902-A1 · Oct 4, 2018 · US
Straining mechanism and screw extruder including straining mechanism
US-2018133947-A1 · May 17, 2018 · US
Stuffing screw
US-2018015434-A1 · Jan 18, 2018 · US
Integrated single and twin screw extruder
US-2017173839-A1 · Jun 22, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01F27/722?
- CPC B01F27/722 is the Cooperative Patent Classification code for “the helices closely surrounded by a casing.”
- How many patents are filed under CPC B01F27/722 (the helices closely surrounded by a casing)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC B01F27/722 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).