Method and apparatus for controlled injection fluid flow
US-12508756-B2 · Dec 30, 2025 · US
Needle valve systems therefor
Needle valve systems therefor · 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 | B29C45/231 |
| Official title | {Needle valve systems therefor} |
| Display label | Needle valve systems therefor |
| Total patents | 60 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 3 |
| 2018 | 12 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 7 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Injection nozzle, injection apparatus, and injection molding machine
US-12508760-B2 · Dec 30, 2025 · US
Method and apparatus for injecting a molten material during an injection molding process
US-2025332773-A1 · Oct 30, 2025 · US
Shut-off nozzle, injection device, and injection molding machine
US-12447658-B2 · Oct 21, 2025 · US
Resin intrusion prevention structure, injection device, and injection molding machine
US-12397484-B2 · Aug 26, 2025 · US
System for operating a fluid actuator
US-12370730-B2 · Jul 29, 2025 · US
Shut-off nozzle, injection device, and injection molding machine
US-12325163-B2 · Jun 10, 2025 · US
Shut-off nozzle of vertical injection molding machine, injection device, and vertical injection molding machine
US-2024351257-A1 · Oct 24, 2024 · US
Adjustment method for shut-off nozzle, shut-off nozzle, injection device, and injection molding machine
US-2024351256-A1 · Oct 24, 2024 · US
Method for manufacturing an impeller
US-12109746-B2 · Oct 8, 2024 · US
Method and apparatus for producing hollow articles made of injection moulded plastic material
US-11938664-B2 · Mar 26, 2024 · US
Shut-off nozzle, injection device, and injection molding machine
US-2024083082-A1 · Mar 14, 2024 · US
Shut-off nozzle with needle valve, injection device and injection molding machine
US-11911941-B2 · Feb 27, 2024 · US
Large part injection mold apparatus and process
US-11865755-B2 · Jan 9, 2024 · US
Method for manufacturing article and injection molding system
US-11780133-B2 · Oct 10, 2023 · US
Resin intrusion prevention structure, injection device, and injection molding machine
US-2023311384-A1 · Oct 5, 2023 · US
Injection nozzle, injection apparatus, and injection molding machine
US-2023302703-A1 · Sep 28, 2023 · US
System for operating a fluid actuator
US-2023294344-A1 · Sep 21, 2023 · US
Method and Apparatus for Controlled Injection Fluid Flow
US-2023140803-A1 · May 4, 2023 · US
Large Part Injection Mold Apparatus and Process
US-2023034476-A1 · Feb 2, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B29C45/231?
- CPC B29C45/231 is the Cooperative Patent Classification code for “Needle valve systems therefor.”
- How many patents are filed under CPC B29C45/231 (Needle valve systems therefor)?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC B29C45/231 growing?
- Publication counts under this code: 7 in 2024 vs 7 in 2025 (latest complete years).