High-frequency welding for headgear
US-2025262825-A1 · Aug 21, 2025 · US
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by conduction heating
by conduction heating · 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 | B23K13/04 |
| Official title | by conduction heating |
| Display label | by conduction heating |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High-frequency welding for headgear
US-12311609-B2 · May 27, 2025 · US
Method and apparatus for friction current joining
US-12103102-B2 · Oct 1, 2024 · US
High-frequency welding for headgear
US-2024075690-A1 · Mar 7, 2024 · US
High frequency welding for headgear
US-11787123-B2 · Oct 17, 2023 · US
Method and Apparatus for Friction Current Joining
US-2022212281-A1 · Jul 7, 2022 · US
High frequency welding for headgear
US-2021170694-A1 · Jun 10, 2021 · US
High frequency welding for headgear
US-10926478-B2 · Feb 23, 2021 · US
Electromagnetic print nozzle for direct-write additive manufacturing
US-10694590-B2 · Jun 23, 2020 · US
Electromagnetic print nozzle for direct-write additive manufacturing with resistive renditions
US-10542589-B2 · Jan 21, 2020 · US
Conformable induction coils for induction joining
US-10377084-B2 · Aug 13, 2019 · US
Systems and methods for use in induction welding
US-10058950-B1 · Aug 28, 2018 · US
Electromagnetic print nozzle having an extruder for direct-write additive manufacturing
US-2018021877-A1 · Jan 25, 2018 · US
Electromagnetic print nozzle for direct-write additive manufacturing with resistive renditions
US-2018027616-A1 · Jan 25, 2018 · US
Electromagnetic print nozzle for direct-write additive manufacturing
US-2018027615-A1 · Jan 25, 2018 · US
High frequency welding for headgear
US-2017225387-A1 · Aug 10, 2017 · US
Conformable Induction Coils for Induction Joining
US-2017203497-A1 · Jul 20, 2017 · US
Conformable induction coils for induction joining
US-9610654-B1 · Apr 4, 2017 · US