Method for producing rail
US-12221660-B2 · Feb 11, 2025 · US
with diminished tendency to become wavy · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C21D9/06 |
| Official title | with diminished tendency to become wavy |
| Display label | with diminished tendency to become wavy |
| Total patents | 6 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2018 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12221660-B2 · Feb 11, 2025 · US
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US-2018171455-A1 · Jun 21, 2018 · US
US-9499874-B2 · Nov 22, 2016 · US
US-9255304-B2 · Feb 9, 2016 · US