Heat pipe, method for manufacturing the same, and device
US-2022187025-A1 · Jun 16, 2022 · US
Reducing; Closing
Reducing; Closing · 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 | B21D41/04 |
| Official title | Reducing; Closing |
| Display label | Reducing; Closing |
| Total patents | 96 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 7 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 9 |
| 2020 | 9 |
| 2021 | 9 |
| 2022 | 9 |
| 2023 | 13 |
| 2024 | 8 |
| 2025 | 9 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hollow shaft member and rolling device
US-2022178401-A1 · Jun 9, 2022 · US
Hollow coil spring and suspension device for vehicle
US-11254177-B2 · Feb 22, 2022 · US
Side-stand for motorcycle and manufacturing method thereof
US-11254382-B2 · Feb 22, 2022 · US
Hollow coil spring and suspension device for vehicle
US-2022041027-A1 · Feb 10, 2022 · US
Nut integrated with bracket and method of manufacturing the same
US-11231063-B2 · Jan 25, 2022 · US
Swage machine modular grab adapter systems and methods
US-11185911-B1 · Nov 30, 2021 · US
Cylinder housing, actuator, and cylinder housing manufacturing method
US-11098736-B2 · Aug 24, 2021 · US
Method of manufacturing orifice and orifice manufactured by the same
US-2021122129-A1 · Apr 29, 2021 · US
Cylinder housing, actuator, and cylinder housing manufacturing method
US-2021088057-A1 · Mar 25, 2021 · US
Electromagnetic crimp terminal, manufacturing method of electromagnetic crimp terminal, and connecting terminal
US-10958029-B2 · Mar 23, 2021 · US
Chuck device
US-10953476-B2 · Mar 23, 2021 · US
Method for manufacturing a turned-down centralizer sub assembly
US-10927611-B2 · Feb 23, 2021 · US
Seamless steel pipe heat-treatment-finishing-treatment continuous facility
US-2021025021-A1 · Jan 28, 2021 · US
Nut integrated with bracket and method of manufacturing the same
US-10883529-B2 · Jan 5, 2021 · US
Method of manufacturing tooth-shaped component, and tooth-shaped component
US-10857582-B2 · Dec 8, 2020 · US
Nut integrated with bracket and method of manufacturing the same
US-2020291981-A1 · Sep 17, 2020 · US
Compression jaw assembly unit
US-2020282522-A1 · Sep 10, 2020 · US
Rolling-swaging tool and method for closing opening of cylindrical member using same
US-10744551-B2 · Aug 18, 2020 · US
Nut integrated with bracket and method of manufacturing the same
US-10711822-B2 · Jul 14, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21D41/04?
- CPC B21D41/04 is the Cooperative Patent Classification code for “Reducing; Closing.”
- How many patents are filed under CPC B21D41/04 (Reducing; Closing)?
- Our database includes 96 publications tagged with this CPC code.
- Is patent activity under CPC B21D41/04 growing?
- Publication counts under this code: 8 in 2024 vs 9 in 2025 (latest complete years).