Extruder, dehydration cylinder, dehydrating method and manufacturing method of resin pellet
US-2025367856-A1 · Dec 4, 2025 · US
for single screws
for single screws · 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 | B29C48/681 |
| Official title | {for single screws} |
| Display label | for single screws |
| Total patents | 42 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Extruder, dehydration cylinder, dehydrating method and manufacturing method of resin pellet
US-12403630-B2 · Sep 2, 2025 · US
Extruder
US-12390975-B2 · Aug 19, 2025 · US
Single-screw extruder and a method for extrusion
US-12115508-B2 · Oct 15, 2024 · US
Method of carrying out thermolysis and thermolysis apparatus
US-12030232-B2 · Jul 9, 2024 · US
Lead casing for pencil, and pencil thereof for writing, drawing, marking, plotting, and coloring
US-11865855-B2 · Jan 9, 2024 · US
Extruder screw having paths within the screw, extruder, and extrusion method
US-11813785-B2 · Nov 14, 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
Single-screw extruder with hollow rotor member
US-11548198-B2 · Jan 10, 2023 · US
Extruder, dehydration cylinder, dehydrating method and manufacturing method of resin pellet
US-2022355511-A1 · Nov 10, 2022 · US
Single-shaft extruder and use of a single-shaft extruder, and method for altering morphology of a superabsorbent polymer gel using a single-shaft extruder
US-11458665-B2 · Oct 4, 2022 · US
Process for the preparation of a reinforced polyamide by extrusion
US-11440231-B2 · Sep 13, 2022 · US
Extruder
US-2022118671-A1 · Apr 21, 2022 · US
A single-screw extruder and a method for extrusion
US-2022097014-A1 · Mar 31, 2022 · US
Lead casing for pencil, and pencil thereof for writing, drawing, marking, plotting, and coloring
US-2022055396-A1 · Feb 24, 2022 · US
Extruder
US-11198242-B2 · Dec 14, 2021 · US
Extruder screw having paths within the screw, extruder, and extrusion method
US-2021354362-A1 · Nov 18, 2021 · US
Extruder screw having paths within the screw, extruder, and extrusion method
US-11110638-B2 · Sep 7, 2021 · US
Extruder
US-11104053-B2 · Aug 31, 2021 · US
Method of carrying out thermolysis and thermolysis apparatus
US-2020398475-A1 · Dec 24, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C48/681?
- CPC B29C48/681 is the Cooperative Patent Classification code for “for single screws.”
- How many patents are filed under CPC B29C48/681 (for single screws)?
- Our database includes 42 publications tagged with this CPC code.
- Is patent activity under CPC B29C48/681 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).