Non-oriented silicon steel and method for producing the same
US-2024279782-A1 · Aug 22, 2024 · US
by melting
by melting · 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 | C22C33/04 |
| Official title | by melting |
| Display label | by melting |
| Total patents | 365 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 20 |
| 2017 | 33 |
| 2018 | 25 |
| 2019 | 35 |
| 2020 | 26 |
| 2021 | 25 |
| 2022 | 39 |
| 2023 | 50 |
| 2024 | 39 |
| 2025 | 40 |
| 2026 | 18 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
High rigid spheroidal graphite cast iron
US-9834831-B2 · Dec 5, 2017 · US
Low-yield-ratio ultra-high-strength hot-rolled q&p steel and production method therefor
US-2017342523-A1 · Nov 30, 2017 · US
Method of making rare earth permanent magnet with excellent magnetic property
US-2017333993-A1 · Nov 23, 2017 · US
R-t-b based permanent magnet
US-2017250015-A1 · Aug 31, 2017 · US
Clutch plate for multiplate wet clutch and method of manufacturing the same
US-2017234371-A1 · Aug 17, 2017 · US
METHOD FOR CONTROLLING Ti CONCENTRATION IN STEEL, AND METHOD FOR PRODUCING SILICON-DEOXIDIZED STEEL
US-2017226602-A1 · Aug 10, 2017 · US
Recovering heavy rare earth metals from magnet scrap
US-9725788-B2 · Aug 8, 2017 · US
Method for producing pellets and method for producing iron-nickel alloy
US-2017211166-A1 · Jul 27, 2017 · US
Method for manufacturing high strength flake graphite cast iron for an engine body and flake graphite cast iron for an engine body
US-9708694-B2 · Jul 18, 2017 · US
Induction heatable stainless steel sheet having excellent corrosion resistance and method of manufacturing the same
US-2017175236-A1 · Jun 22, 2017 · US
Oxidation resistant high-entropy alloys
US-2017167003-A1 · Jun 15, 2017 · US
Method for producing pellet and method for smelting nickel oxide ore
US-2017152584-A1 · Jun 1, 2017 · US
Rolled steel bar for machine structural use and method of producing the same
US-2017137904-A1 · May 18, 2017 · US
H-section steel and method of producing the same
US-2017107589-A1 · Apr 20, 2017 · US
Molten metal temperature control method
US-2017102185-A1 · Apr 13, 2017 · US
Production method of maraging steel
US-2017096728-A1 · Apr 6, 2017 · US
Corrosion and cracking resistant high manganese austenitic steels containing passivating elements
US-2017088910-A1 · Mar 30, 2017 · US
Direct Smelting Process
US-2017081745-A1 · Mar 23, 2017 · US
Method for producing ferroalloy containing nickel
US-9598748-B2 · Mar 21, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22C33/04?
- CPC C22C33/04 is the Cooperative Patent Classification code for “by melting.”
- How many patents are filed under CPC C22C33/04 (by melting)?
- Our database includes 365 publications tagged with this CPC code.
- Is patent activity under CPC C22C33/04 growing?
- Publication counts under this code: 39 in 2024 vs 40 in 2025 (latest complete years).