Mixing and extrusion machine with self-cleaning twin screw and method of use
US-12508742-B2 · Dec 30, 2025 · US
Constructions or methods for cleaning the mixing or kneading device (cleaning in general B08B)
Constructions or methods for cleaning the mixing or kneading device (cleaning in general B08B) · 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 | B29B7/802 |
| Official title | {Constructions or methods for cleaning the mixing or kneading device (cleaning in general B08B)} |
| Display label | Constructions or methods for cleaning the mixing or kneading device (cleaning in general B08B) |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 7 |
| 2018 | 5 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 10 |
| 2024 | 2 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Housing cleaning device for cleaning a housing of a screw machine
US-2025326012-A1 · Oct 23, 2025 · US
Feeding screw machine for feeding a processing screw machine
US-12440814-B2 · Oct 14, 2025 · US
Device for producing a multi-component mixture and method for operating said type of device
US-12370722-B2 · Jul 29, 2025 · US
Housing cleaning device for cleaning a housing of a screw machine
US-12370582-B2 · Jul 29, 2025 · US
Kneading extrusion apparatus, its control method, and method for manufacturing resin compound
US-2024375315-A1 · Nov 14, 2024 · US
Output mechanism of a mixer with converging conical twin screws
US-12042957-B2 · Jul 23, 2024 · US
Connecting device for connecting a screw machine to a gear mechanism, and method for cleaning such a connecting device
US-11447345-B2 · Sep 20, 2022 · US
Device and method for producing a dyed and an undyed plastic melt
US-11440221-B2 · Sep 13, 2022 · US
Mixing and extrusion machine with self-cleaning twin screw and method of use
US-2022258379-A1 · Aug 18, 2022 · US
Preparing and dispensing polymer materials and producing polymer articles therefrom
US-11413591-B2 · Aug 16, 2022 · US
Feeding screw machine for feeding a processing screw machine
US-2022184570-A1 · Jun 16, 2022 · US
Output mechanism of a mixer with converging conical twin screws
US-2022176591-A1 · Jun 9, 2022 · US
Twin-screw mixing and extrusion machine with mobile elements
US-2022152874-A1 · May 19, 2022 · US
Housing cleaning device for cleaning a housing of a screw machine
US-2022105547-A1 · Apr 7, 2022 · US
Device for producing a multi-component mixture and method for operating said type of device
US-2022088830-A1 · Mar 24, 2022 · US
Extrusion device and extrusion method that produces a plastic film
US-11273587-B2 · Mar 15, 2022 · US
Device and method for cleaning an extruder for elastomer mixtures
US-10889043-B2 · Jan 12, 2021 · US
Overturning device for overturning molten material and purging method
US-10773441-B2 · Sep 15, 2020 · US
Connecting Device For Connecting A Screw Machine To A Gear Mechanism, And Method For Cleaning Such A Connecting Device
US-2020156881-A1 · May 21, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29B7/802?
- CPC B29B7/802 is the Cooperative Patent Classification code for “Constructions or methods for cleaning the mixing or kneading device (cleaning in general B08B).”
- How many patents are filed under CPC B29B7/802 (Constructions or methods for cleaning the mixing or kneading device (cleaning in general B08B))?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC B29B7/802 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).