Gas supply device, injection molding machine, and foam molding method
US-12583151-B2 · Mar 24, 2026 · US
through the screw
through the 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 | B29C44/3449 |
| Official title | {through the screw} |
| Display label | through the screw |
| Total patents | 30 |
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 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for estimating gas concentration in molten resin in injection device for foam molding
US-2026021612-A1 · Jan 22, 2026 · US
Injection device for foam molding, injection molding machine, and foam molding method
US-2025121546-A1 · Apr 17, 2025 · US
Screw of injection molding machine for foam molding, and injection molding machine
US-12138836-B2 · Nov 12, 2024 · US
Master batch composition for a weight-reduced plastic product and method of manufacturing the same
US-2024254292-A1 · Aug 1, 2024 · US
Injection molding machine for performing foam molding and method for controlling injection molding machine
US-2024051208-A1 · Feb 15, 2024 · US
Injection molding machine for foam molding and method for controlling injection molding machine
US-2024042664-A1 · Feb 8, 2024 · US
Gas supply device, injection molding machine, and foam molding method
US-2024017452-A1 · Jan 18, 2024 · US
Master batch composition for a weight-reduced plastic product and method of manufacturing the same
US-2023390976-A1 · Dec 7, 2023 · US
Method for producing molded foam articles, and molded foam articles
US-11753515-B2 · Sep 12, 2023 · US
Screw of injection molding machine for foam molding and injection molding machine
US-11504891-B2 · Nov 22, 2022 · US
Mixing device for producing a plastic melt loaded with a propellant
US-11433578-B2 · Sep 6, 2022 · US
Foaming resin composition, preparation method therefor, and foam using same
US-11365304-B2 · Jun 21, 2022 · US
Screw of injection molding machine for foam molding and injection molding machine
US-2021178648-A1 · Jun 17, 2021 · US
Vented twin-screw kneading extrusion apparatus and extrusion method
US-11007700-B2 · May 18, 2021 · US
Method for producing molded foam articles, and molded foam articles
US-2021024716-A1 · Jan 28, 2021 · US
Vented twin-screw kneading extrusion apparatus and extrusion method
US-2020215738-A1 · Jul 9, 2020 · US
Method for preparing acrylic copolymer, acrylic copolymer and resin composition comprising the copolymer
US-10703839-B2 · Jul 7, 2020 · US
Foamable thermoplastic polyester copolymer
US-2020172661-A1 · Jun 4, 2020 · US
Vented twin-screw kneading extrusion apparatus and extrusion method
US-10625459-B2 · Apr 21, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C44/3449?
- CPC B29C44/3449 is the Cooperative Patent Classification code for “through the screw.”
- How many patents are filed under CPC B29C44/3449 (through the screw)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC B29C44/3449 growing?
- Publication counts under this code: 5 in 2024 vs 1 in 2025 (latest complete years).