Heating system for drill steel pipe billet and heating method thereof
US-11565294-B2 · Jan 31, 2023 · US
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with flames
with flames · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C21D1/08 |
| Official title | with flames |
| Display label | with flames |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2019 | 1 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Steel sheet temperature control device and temperature control method
US-11466340-B2 · Oct 11, 2022 · US
Heating system for drill steel pipe billet and heating method thereof
US-2021299723-A1 · Sep 30, 2021 · US
Joining element, connection structure with the joining element, manufacturing method of the joining element and corresponding connection method
US-2021239146-A1 · Aug 5, 2021 · US
Steel sheet temperature control device and temperature control method
US-2021198765-A1 · Jul 1, 2021 · US
Laser-hardened fillet-rolled crankshaft
US-2019143398-A1 · May 16, 2019 · US
Thermal treatment method for micromechanical horological parts
US-9359652-B2 · Jun 7, 2016 · US