Multistep electrode weld face geometry for weld bonding aluminum to steel
US-2017361392-A1 · Dec 21, 2017 · US
of different metals
of different metals · 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 | B23K11/20 |
| Official title | of different metals |
| Display label | of different metals |
| Total patents | 338 |
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 | 24 |
| 2016 | 19 |
| 2017 | 33 |
| 2018 | 37 |
| 2019 | 51 |
| 2020 | 41 |
| 2021 | 34 |
| 2022 | 42 |
| 2023 | 21 |
| 2024 | 23 |
| 2025 | 13 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing an acceleration sensor
US-9841434-B2 · Dec 12, 2017 · US
Different material joining structure and different material joining method
US-2017349221-A1 · Dec 7, 2017 · US
Resistance spot welding method
US-2017312846-A1 · Nov 2, 2017 · US
Alternately direct resistance spot welding of al-to-al, al-to-steel, and steel-t0-steel with welding electrode having oxide-disrupting structural features
US-2017304928-A1 · Oct 26, 2017 · US
External heat assisted welding of dissimilar metal workpieces
US-2017304925-A1 · Oct 26, 2017 · US
Resistance spot welding of aluminum-to-aluminum, aluminum-to-steel, and steel-to- steel in a specified sequence and using a cover
US-2017297138-A1 · Oct 19, 2017 · US
Method of joining aluminum and steel workpieces
US-2017297137-A1 · Oct 19, 2017 · US
Resistance spot welding steel and aluminum workpieces with electrode having insert
US-2017297135-A1 · Oct 19, 2017 · US
Resistance spot welding aluminum to steel using preplaced metallurgical additives
US-2017297134-A1 · Oct 19, 2017 · US
Control of intermetallic compound growth in aluminum to steel resistance welding
US-2017297136-A1 · Oct 19, 2017 · US
Method of resistance spot welding aluminum to steel
US-2017291246-A1 · Oct 12, 2017 · US
Al-steel weld joint
US-2017291247-A1 · Oct 12, 2017 · US
Welding electrode for use in a resistance spot welding workpiece stack-ups that include an aluminum workpiece and a steel workpiece
US-2017291248-A1 · Oct 12, 2017 · US
Lithium-ion secondary-battery case and manufacturing method therefor
US-2017271627-A1 · Sep 21, 2017 · US
Joint structure and joint structure manufacturing method
US-9643356-B2 · May 9, 2017 · US
Methods for counteracting rebounding effects during solid state resistance welding of dissimilar materials
US-9636485-B2 · May 2, 2017 · US
Resistance spot welding workpiece stack-ups of different combinations of steel workpieces and aluminum workpieces
US-2016346865-A1 · Dec 1, 2016 · US
Boltless Track Shoe
US-2016297486-A1 · Oct 13, 2016 · US
Conical shaped current flow to facilitate dissimilar metal spot welding
US-2016288242-A1 · Oct 6, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B23K11/20?
- CPC B23K11/20 is the Cooperative Patent Classification code for “of different metals.”
- How many patents are filed under CPC B23K11/20 (of different metals)?
- Our database includes 338 publications tagged with this CPC code.
- Is patent activity under CPC B23K11/20 growing?
- Publication counts under this code: 23 in 2024 vs 13 in 2025 (latest complete years).