Vent stuffer for extruder and extrusion apparatus
US-2026084360-A1 · Mar 26, 2026 · US
having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk · 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 | B29C48/53 |
| Official title | having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk |
| Display label | having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk |
| Total patents | 59 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 4 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 9 |
| 2023 | 6 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for manufacturing cylindrical honeycomb fired body
US-12420469-B2 · Sep 23, 2025 · US
Plasticizing unit
US-12304125-B2 · May 20, 2025 · US
Manufacturing method and manufacturing device for foam molded article
US-11820063-B2 · Nov 21, 2023 · US
Extruder screw having paths within the screw, extruder, and extrusion method
US-11813785-B2 · Nov 14, 2023 · US
Method for manufacturing cylindrical honeycomb fired body
US-2023311398-A1 · Oct 5, 2023 · US
Plasticizing unit
US-2023302699-A1 · Sep 28, 2023 · US
Single-shaft extruder and use of a single-shaft extruder, and method for altering morphology of a superabsorbent polymer, specifically an SAP polymer gel, using a single-shaft extruder
US-11560456-B2 · Jan 24, 2023 · US
Manufacturing method and manufacturing device for foam molded article
US-2023021266-A1 · Jan 19, 2023 · US
Extruder and molding assembly
US-2022355510-A1 · Nov 10, 2022 · US
Manufacturing method and manufacturing device for foam molded article
US-11478969-B2 · Oct 25, 2022 · US
Plastic parts made from plastics having different melting points and a method of manufacturing same
US-11472065-B2 · Oct 18, 2022 · US
Extruder screw with conveying portions and barrier portions and extrusion methods using the extruder screw and a plurality of barrel blocks
US-11400632-B2 · Aug 2, 2022 · US
Method and apparatus for manufacturing foamed product
US-11318646-B2 · May 3, 2022 · US
Single extruder barrel design to accommodate compounding, chemical reactions, and immiscible polymer blends with solids coated by one of the polymers
US-2022097259-A1 · Mar 31, 2022 · US
Process and device for producing molded foam
US-11241816-B2 · Feb 8, 2022 · US
Extruder, masterbatch manufacturing method, and tire manufacturing method
US-11230046-B2 · Jan 25, 2022 · US
Extruder screw with alternately-arranged conveyance portions and extruders and extrusion methods using the extruder screw
US-11229889-B2 · Jan 25, 2022 · US
Method and apparatus for manufacturing foam molded body
US-11207809-B2 · Dec 28, 2021 · US
Extruder
US-11198242-B2 · Dec 14, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C48/53?
- CPC B29C48/53 is the Cooperative Patent Classification code for “having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk.”
- How many patents are filed under CPC B29C48/53 (having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC B29C48/53 growing?
- Publication counts under this code: 6 in 2023 vs 2 in 2025 (latest complete years).