Fin assembling method
US-12560391-B2 · Feb 24, 2026 · US
Devices for piling sheets
Devices for piling sheets · 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 | B21D43/22 |
| Official title | Devices for piling sheets |
| Display label | Devices for piling sheets |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Laminated core, more particularly for a stator of an electric machine, and method for producing said laminated core
US-2026005554-A1 · Jan 1, 2026 · US
Three layered bubble sheet cooling plate
US-2025135523-A1 · May 1, 2025 · US
Non-oriented electrical steel sheet, motor core, method for manufacturing non-oriented electrical steel sheet, and method for manufacturing motor core
US-2025140456-A1 · May 1, 2025 · US
Fin assembling method
US-2025012519-A1 · Jan 9, 2025 · US
Non-oriented electrical steel sheet, motor core, method for manufacturing non-oriented electrical steel sheet, and method for manufacturing motor core
US-2024096531-A1 · Mar 21, 2024 · US
Method for stacking sheet metal parts made from an electrical steel strip or sheet to form lamination stacks
US-11745247-B2 · Sep 5, 2023 · US
Sheet material machining system and method for processing workpiece
US-11623266-B2 · Apr 11, 2023 · US
Method for stacking sheet metal parts made from an electrical steel strip or sheet to form lamination stacks
US-2023100562-A1 · Mar 30, 2023 · US
Apparatus for manufacturing fin and method for manufacturing fin
US-11541446-B2 · Jan 3, 2023 · US
Method of machining an opening in a plurality of blanks
US-11458526-B2 · Oct 4, 2022 · US
Method for stacking punched lamination elements to form lamination stacks
US-2022241837-A1 · Aug 4, 2022 · US
Integrated flattening, cutting, and collecting assembly capable of integrity maintenance
US-11267035-B2 · Mar 8, 2022 · US
Workpiece placement platform device having workpiece positioning member movable in and out relative to upper surface of placement platform
US-11020787-B2 · Jun 1, 2021 · US
Apparatus for manufacturing fin and method for manufacturing fin
US-2021069771-A1 · Mar 11, 2021 · US
Workpiece placement platform device having workpiece positioning member movable in and out relative to upper surface of placement platform
US-2020147668-A1 · May 14, 2020 · US
Integrated flattening, cutting, and collecting assembly capable of integrity maintenance
US-2019388950-A1 · Dec 26, 2019 · US
Fin stacking apparatus
US-10507511-B2 · Dec 17, 2019 · US
Sheet material machining system and method for processing workpiece
US-2019337041-A1 · Nov 7, 2019 · US
Method of machining an opening in a plurality of blanks
US-2019217371-A1 · Jul 18, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21D43/22?
- CPC B21D43/22 is the Cooperative Patent Classification code for “Devices for piling sheets.”
- How many patents are filed under CPC B21D43/22 (Devices for piling sheets)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC B21D43/22 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).