Hot-rolled steel sheet and method of producing same, and electric resistance welded steel pipe or tube and method of producing same
US-2025250660-A1 · Aug 7, 2025 · US
Welding by high-frequency current heating
Welding by high-frequency current 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 | B23K13/00 |
| Official title | Welding by high-frequency current heating |
| Display label | Welding by high-frequency current heating |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electric resistance welded pipe or tube and method of producing same
US-2025178116-A1 · Jun 5, 2025 · US
Welded rail
US-2025129460-A1 · Apr 24, 2025 · US
Dielectric-heating bonding film and bonding method using dielectric-heating bonding film
US-11673340-B2 · Jun 13, 2023 · US
Dielectric-heating bonding film and bonding method using dielectric-heating bonding film
US-11541607-B2 · Jan 3, 2023 · US
Electric resistance welded steel pipe for producing hollow stabilizer, hollow stabilizer, and production methods for same
US-11440125-B2 · Sep 13, 2022 · US
Vehicle seating assembly with aesthetic trim cover assembly
US-11247593-B2 · Feb 15, 2022 · US
Electric resistance welded clad steel pipe or tube and method of producing same
US-11079045-B2 · Aug 3, 2021 · US
Dielectric-heating bonding film and joining method using dielectric-heating bonding film
US-11007722-B2 · May 18, 2021 · US
Vehicle seating assembly with aesthetic trim cover assembly
US-2021009017-A1 · Jan 14, 2021 · US
Electric resistance welded steel pipe for producing hollow stabilizer, hollow stabilizer, and production methods for same
US-2021001425-A1 · Jan 7, 2021 · US
Method of monitoring manufacturing status of electric resistance welded pipe, device for monitoring manufacturing status of electric resistance welded pipe, and method of manufacturing electric resistance welded pipe
US-10744589-B2 · Aug 18, 2020 · US
Dielectric-heating bonding film and joining method using dielectric-heating bonding film
US-2020063001-A1 · Feb 27, 2020 · US
Dielectric-heating bonding film and bonding method using dielectric-heating bonding film
US-2019329504-A1 · Oct 31, 2019 · US
Dielectric-heating bonding film and bonding method using dielectric-heating bonding film
US-2019283334-A1 · Sep 19, 2019 · US
Electric resistance welded clad steel pipe or tube and method of producing same
US-2019186655-A1 · Jun 20, 2019 · US
Electric-resistance-welded pipe welding apparatus
US-10307808-B2 · Jun 4, 2019 · US
Electric resistance welded steel pipe for oil well
US-10196702-B2 · Feb 5, 2019 · US
Vehicle seating assembly with aesthetic trim cover assembly
US-2018370403-A1 · Dec 27, 2018 · US
Electric resistance welded stainless clad steel pipe and method of manufacturing the same
US-2018243809-A1 · Aug 30, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B23K13/00?
- CPC B23K13/00 is the Cooperative Patent Classification code for “Welding by high-frequency current heating.”
- How many patents are filed under CPC B23K13/00 (Welding by high-frequency current heating)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC B23K13/00 growing?
- Publication counts under this code: 2 in 2023 vs 3 in 2025 (latest complete years).