Wire rod and part with improved delayed fracture resistance, and methods for manufacturing same
US-2024060162-A1 · Feb 22, 2024 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C21D8/065 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 320 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 25 |
| 2017 | 39 |
| 2018 | 42 |
| 2019 | 31 |
| 2020 | 33 |
| 2021 | 25 |
| 2022 | 25 |
| 2023 | 21 |
| 2024 | 28 |
| 2025 | 27 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stabilizer
US-2017349962-A1 · Dec 7, 2017 · US
Production method for stabilizers
US-2017349961-A1 · Dec 7, 2017 · US
Wire rod
US-2017342530-A1 · Nov 30, 2017 · US
Wire rod having enhanced strength and impact toughness and preparation method for same
US-2017335439-A1 · Nov 23, 2017 · US
Rolled steel bar or rolled wire rod for cold-forged component
US-2017335426-A1 · Nov 23, 2017 · US
High-carbon steel wire rod with excellent wire drawability
US-2017321309-A1 · Nov 9, 2017 · US
Steel for carburizing, carburized steel component, and method of producing the same
US-9796158-B2 · Oct 24, 2017 · US
Steel for carburizing, carburized steel component, and method of producing the same
US-2017282501-A1 · Oct 5, 2017 · US
Method for producing cold-formed steel springs
US-2017283904-A1 · Oct 5, 2017 · US
Method for producing hot-formed steel springs
US-2017275721-A1 · Sep 28, 2017 · US
Stainless steel spring and stainless steel spring manufacturing method
US-2017233844-A1 · Aug 17, 2017 · US
Steel for bolts, and bolt
US-2017219000-A1 · Aug 3, 2017 · US
Method for manufacturing austenite-ferrite stainless steel with improved machinability
US-2017121789-A1 · May 4, 2017 · US
Fabrication method for stepped forged material
US-9574250-B2 · Feb 21, 2017 · US
Filament for high strength steel cord
US-2017044642-A1 · Feb 16, 2017 · US
Method of producing an implant
US-2017021062-A1 · Jan 26, 2017 · US
Bearing steel having improved fatigue durability and method of manufacturing the same
US-2016369370-A1 · Dec 22, 2016 · US
Spring steel and spring
US-9523404-B2 · Dec 20, 2016 · US
Bearing part
US-2016333438-A1 · Nov 17, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D8/065?
- CPC C21D8/065 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C21D8/065 (Chemistry & Metallurgy)?
- Our database includes 320 publications tagged with this CPC code.
- Is patent activity under CPC C21D8/065 growing?
- Publication counts under this code: 28 in 2024 vs 27 in 2025 (latest complete years).