Physical property improvement of iron castings using carbon nanomaterials
US-10844446-B2 · Nov 24, 2020 · US
containing spheroidal graphite
containing spheroidal graphite · 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 | C22C37/04 |
| Official title | containing spheroidal graphite |
| Display label | containing spheroidal graphite |
| Total patents | 101 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 9 |
| 2017 | 16 |
| 2018 | 6 |
| 2019 | 10 |
| 2020 | 13 |
| 2021 | 5 |
| 2022 | 14 |
| 2023 | 11 |
| 2024 | 7 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spherical graphite cast iron semi-solid casting method and semi-solid cast product
US-2020283859-A1 · Sep 10, 2020 · US
High rigid spheroidal graphite cast iron
US-10745784-B2 · Aug 18, 2020 · US
Method for heat-treating uppermost surface of spheroidal graphite cast iron and spheroidal graphite cast iron heat-treated by the same
US-2020216923-A1 · Jul 9, 2020 · US
Method for manufacturing cast iron casting with fining graphite and suspension part
US-2020206806-A1 · Jul 2, 2020 · US
Method of manufacturing cam piece for continuously variable valve duration and cam piece manufactured therefrom
US-2020181726-A1 · Jun 11, 2020 · US
Ductile iron composition and process of forming a ductile iron component
US-10662510-B2 · May 26, 2020 · US
Wear resistant material and system and method of creating a wear resistant material
US-2020139431-A1 · May 7, 2020 · US
High-strength nodular iron with good weldability and machinability
US-2020131606-A1 · Apr 30, 2020 · US
As-cast high strength nodular iron with favorable machinability
US-2020095655-A1 · Mar 26, 2020 · US
Method for producing die-cast product of spherical graphitic cast iron including ultrafine spherical graphite, and spheroidizing treatment agent
US-2020071780-A1 · Mar 5, 2020 · US
Wear resistant material and system and method of creating a wear resistant material
US-10543528-B2 · Jan 28, 2020 · US
Composite roll for rolling and its production method
US-2019366402-A1 · Dec 5, 2019 · US
Composite roll for rolling
US-2019352753-A1 · Nov 21, 2019 · US
Ductile iron alloys and materials including a thin-wall layer of a ductile iron alloy
US-2019264304-A1 · Aug 29, 2019 · US
Iron Material For High-Temperature-Resistant Bearing Bushings, Bearing Bushing Made Of Said Material, And Turbocharger Having Such A Bearing Bushing
US-2019218935-A1 · Jul 18, 2019 · US
Spheroidal graphite cast iron
US-2019211426-A1 · Jul 11, 2019 · US
Sliding element with max phase coating
US-2019194795-A1 · Jun 27, 2019 · US
Heat resistant spheroidal graphite cast iron, method of manufacturing the same and engine exhaust system part including the same
US-10294550-B2 · May 21, 2019 · US
Cast iron material
US-2019144978-A1 · May 16, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22C37/04?
- CPC C22C37/04 is the Cooperative Patent Classification code for “containing spheroidal graphite.”
- How many patents are filed under CPC C22C37/04 (containing spheroidal graphite)?
- Our database includes 101 publications tagged with this CPC code.
- Is patent activity under CPC C22C37/04 growing?
- Publication counts under this code: 7 in 2024 vs 2 in 2025 (latest complete years).