Spheroidal graphite cast iron, cast article and automobile structure part made thereof, and method for producing spheroidal graphite cast iron article
US-12522901-B2 · Jan 13, 2026 · US
Making spheroidal graphite cast-iron
Making spheroidal graphite cast-iron · 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 | C21C1/10 |
| Official title | Making spheroidal graphite cast-iron |
| Display label | Making spheroidal graphite cast-iron |
| Total patents | 32 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 9 |
| 2023 | 4 |
| 2024 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spheroidal Graphite Cast Iron, Method for Manufacturing Spheroidal Graphite Cast Iron, and Spheroidizing Treatment Agent
US-2024167126-A1 · May 23, 2024 · US
Spheroidal graphite cast iron and method of producing spheroidal graphite cast iron, and vehicle undercarriage parts
US-11946109-B2 · Apr 2, 2024 · US
Method for controlling amount of silicon added to ductile cast iron, method for casting ductile cast iron, and cast product
US-11946120-B2 · Apr 2, 2024 · US
Spherical graphite cast iron semi-solid casting method and semi-solid cast product
US-11920205-B2 · Mar 5, 2024 · US
Method for increasing the quality of graphite balls
US-2024035126-A1 · Feb 1, 2024 · US
Method for manufacturing cast iron casting with fining graphite and suspension part
US-11845125-B2 · Dec 19, 2023 · US
Method for producing die-cast product of spherical graphitic cast iron including ultrafine spherical graphite, and spheroidizing treatment agent
US-11845999-B2 · Dec 19, 2023 · US
Spheroidal graphite cast iron, cast article and automobile structure part made thereof, and method for producing spheroidal graphite cast iron article
US-2023392237-A1 · Dec 7, 2023 · US
Scroll compressor with a compression section made of solid solution strengthened ferritic ductile iron
US-2023055808-A1 · Feb 23, 2023 · US
Method for controlling amount of silicon added to ductile cast iron, method for casting ductile cast iron, and cast product
US-2022325390-A1 · Oct 13, 2022 · US
Method for manufacturing cast iron casting with fining graphite and suspension part
US-2022324013-A1 · Oct 13, 2022 · US
Spheroidal graphite cast iron
US-11466349-B2 · Oct 11, 2022 · US
Spherical graphite cast iron semi-solid casting method and semi-solid cast product
US-2022275467-A1 · Sep 1, 2022 · US
Spheroidal graphite cast iron, cast article and automobile structure part made thereof, and method for producing spheroidal graphite cast iron article
US-2022243308-A1 · Aug 4, 2022 · US
Method for manufacturing cast iron casting with fining graphite and suspension part
US-11396041-B2 · Jul 26, 2022 · US
Spheroidal graphite cast iron and method of producing spheroidal graphite cast iron, and vehicle undercarriage parts
US-2022213568-A1 · Jul 7, 2022 · US
Method for producing die-cast product of spherical graphitic cast iron including ultrafine spherical graphite, and spheroidizing treatment agent
US-2022106652-A1 · Apr 7, 2022 · US
Method for producing die-cast product of spheroidal graphite cast iron having ultrafine spheroidal graphite, and die-cast product of spheroidal graphite cast iron
US-11254993-B2 · Feb 22, 2022 · US
Method for supplying hydrogen-containing reducing gas to shaft part of blast furnace
US-10961596-B2 · Mar 30, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21C1/10?
- CPC C21C1/10 is the Cooperative Patent Classification code for “Making spheroidal graphite cast-iron.”
- How many patents are filed under CPC C21C1/10 (Making spheroidal graphite cast-iron)?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC C21C1/10 growing?
- Publication counts under this code: 4 in 2023 vs 5 in 2024 (latest complete years).