Low frequency torsional vibration damper having a formed hub
US-10851870-B2 · Dec 1, 2020 · US
of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder · 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 | B21D39/02 |
| Official title | of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder |
| Display label | of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder |
| Total patents | 110 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 5 |
| 2017 | 15 |
| 2018 | 10 |
| 2019 | 12 |
| 2020 | 8 |
| 2021 | 9 |
| 2022 | 7 |
| 2023 | 9 |
| 2024 | 8 |
| 2025 | 14 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger and manufacturing method thereof
US-10823509-B2 · Nov 3, 2020 · US
Roller hemming device and preliminary bending method using the device
US-2020338617-A1 · Oct 29, 2020 · US
Method for producing steel plate member
US-2020324360-A1 · Oct 15, 2020 · US
Roller hemming apparatus
US-10799932-B2 · Oct 13, 2020 · US
Rolling-swaging tool and method for closing opening of cylindrical member using same
US-10744551-B2 · Aug 18, 2020 · US
Optimized method and device for crimping attachment of an abradable piece support to a radially inner wall of a vane sector of a turbomachine
US-10682733-B2 · Jun 16, 2020 · US
Forming system
US-2019366410-A1 · Dec 5, 2019 · US
Button Fastener-Side Die for Attaching Snap Button and Method for Correcting Leg of Button Fastener
US-2019307195-A1 · Oct 10, 2019 · US
Knurling Apparatus and Methods for Architectural Assemblies
US-2019284866-A1 · Sep 19, 2019 · US
Workpiece bending method and workpiece bending apparatus
US-2019255586-A1 · Aug 22, 2019 · US
Hemming Head
US-2019255589-A1 · Aug 22, 2019 · US
Assembly for manufacturing a metal part and use of such an assembly
US-2019255585-A1 · Aug 22, 2019 · US
Heat exchanger and manufacturing method thereof
US-2019120561-A1 · Apr 25, 2019 · US
Structure of semi-finished product for movement restriction member, apparatus for attaching semi-finished product to bar member, structure for attachment of semi-finished product and bar member, and method of attaching semi-finished product
US-10266029-B2 · Apr 23, 2019 · US
Method and Apparatus for Forming Materials with Low Ductility
US-2019076908-A1 · Mar 14, 2019 · US
Roller hemming apparatus
US-2019070655-A1 · Mar 7, 2019 · US
Vehicle control arm for a wheel suspension
US-2019061453-A1 · Feb 28, 2019 · US
Different-material panel structure
US-2019048910-A1 · Feb 14, 2019 · US
Method of forming a closed cross-sectional structure
US-10160031-B2 · Dec 25, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B21D39/02?
- CPC B21D39/02 is the Cooperative Patent Classification code for “of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder.”
- How many patents are filed under CPC B21D39/02 (of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder)?
- Our database includes 110 publications tagged with this CPC code.
- Is patent activity under CPC B21D39/02 growing?
- Publication counts under this code: 8 in 2024 vs 14 in 2025 (latest complete years).