Extrusion apparatus and methods
US-2018354181-A1 · Dec 13, 2018 · US
using a single screw
using a single screw · 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 | B29C48/397 |
| Official title | {using a single screw} |
| Display label | using a single screw |
| Total patents | 202 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 15 |
| 2017 | 19 |
| 2018 | 7 |
| 2019 | 20 |
| 2020 | 15 |
| 2021 | 23 |
| 2022 | 23 |
| 2023 | 22 |
| 2024 | 20 |
| 2025 | 15 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Peroxide Treated Metallocene-Based Polyolefins With Improved Melt Strength
US-2018273712-A1 · Sep 27, 2018 · US
Extruder
US-2018236705-A1 · Aug 23, 2018 · US
Elimination of contaminants in wet natural rubber
US-2018134814-A1 · May 17, 2018 · US
Rubber strip manufacturing device and manufacturing method
US-9902097-B2 · Feb 27, 2018 · US
Extruder provided with vents
US-2018001514-A1 · Jan 4, 2018 · US
Method for manufacturing a tyre blank by means of a ply comprising two rubbers
US-9821524-B2 · Nov 21, 2017 · US
Peroxide Treated Metallocene-Based Polyolefins With Improved Melt Strength
US-2017306114-A1 · Oct 26, 2017 · US
Peroxide treated metallocene-based polyolefins with improved melt strength
US-9732197-B2 · Aug 15, 2017 · US
Screw for extruder, screw element, extruder, and extrusion method
US-2017225379-A1 · Aug 10, 2017 · US
Kneading apparatus, method for producing thermoplastic resin molded product, and foam injection molding method
US-9718217-B2 · Aug 1, 2017 · US
Single and twin screw extruders with ultrasound horns for decrosslinking and devulcanization
US-9714333-B2 · Jul 25, 2017 · US
Method for forming stratified rubber article with variable cure rate
US-9701081-B2 · Jul 11, 2017 · US
Method of manufacturing transparent resin composition
US-9688001-B2 · Jun 27, 2017 · US
Process for producing wet rubber masterbatch, wet rubber masterbatch, and rubber composition containing wet rubber masterbatch
US-2017152353-A1 · Jun 1, 2017 · US
Batch mixer with plunger
US-9649805-B2 · May 16, 2017 · US
Extruder Including a Threaded Barrel
US-2017129156-A1 · May 11, 2017 · US
Batch mixer with plunger
US-9643352-B2 · May 9, 2017 · US
Batch mixer with plunger
US-9630355-B2 · Apr 25, 2017 · US
Thermoplastic Polyurethane Materials For Forming Medical Devices
US-2017107320-A1 · Apr 20, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C48/397?
- CPC B29C48/397 is the Cooperative Patent Classification code for “using a single screw.”
- How many patents are filed under CPC B29C48/397 (using a single screw)?
- Our database includes 202 publications tagged with this CPC code.
- Is patent activity under CPC B29C48/397 growing?
- Publication counts under this code: 20 in 2024 vs 15 in 2025 (latest complete years).