Methods of making sintered articles
US-2016375493-A1 · Dec 29, 2016 · US
Iron group metals
Iron group metals · 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 | C04B2235/405 |
| Official title | Iron group metals |
| Display label | Iron group metals |
| Total patents | 441 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 42 |
| 2017 | 35 |
| 2018 | 40 |
| 2019 | 54 |
| 2020 | 44 |
| 2021 | 42 |
| 2022 | 35 |
| 2023 | 46 |
| 2024 | 48 |
| 2025 | 24 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cermet, and method for manufacturing same, as well as cutting tool
US-2016369380-A1 · Dec 22, 2016 · US
Density enhancement methods and compositions
US-2016368057-A1 · Dec 22, 2016 · US
Method for manufacturing cubic boron nitride sintered body, and cubic boron nitride sintered body
US-9522850-B2 · Dec 20, 2016 · US
Carbon composites, methods of manufacture, and uses thereof
US-9505151-B2 · Nov 29, 2016 · US
Diamond polycrystalline body and method for manufacturing the same, and tool
US-9487446-B2 · Nov 8, 2016 · US
Development of nickel-zinc ferrites and methods for preparing same using iron-oxide byproducts of steel industry
US-2016322140-A1 · Nov 3, 2016 · US
Nickel-zinc ferrites and methods for preparing same using fine iron oxide and bag house dust
US-2016322141-A1 · Nov 3, 2016 · US
Development of nanocrystalline magnesium ferrites and methods for preparing same from steel rolling mill by-product millscale
US-2016322142-A1 · Nov 3, 2016 · US
Composition for a novel grade for cutting tools
US-2016318811-A1 · Nov 3, 2016 · US
Aqueous slurry for making a powder of hard material
US-9475945-B2 · Oct 25, 2016 · US
Ferrite composition and electronic component
US-2016293302-A1 · Oct 6, 2016 · US
Piezoelectric/electrostrictive material, piezoelectric/electrostrictive body, and resonance driving device
US-2016293832-A1 · Oct 6, 2016 · US
Methods of forming polycrystalline elements from brown polycrystalline tables
US-9440333-B2 · Sep 13, 2016 · US
Method for pyrolyzing preceramic polymer material using electromagnetic radiation
US-2016251267-A1 · Sep 1, 2016 · US
Press for making a cutting tool green body having a helical flute, and method for making a cutting tool green body having a helical flute
US-2016229082-A1 · Aug 11, 2016 · US
Sintered objects and processes for producing same
US-9403722-B2 · Aug 2, 2016 · US
Method to Synthesize Bulk Iron Nitride
US-2016207769-A1 · Jul 21, 2016 · US
Density enhancement methods and compositions
US-2016200045-A1 · Jul 14, 2016 · US
Methods of fabricating polycrystalline diamond compacts
US-9381620-B1 · Jul 5, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/405?
- CPC C04B2235/405 is the Cooperative Patent Classification code for “Iron group metals.”
- How many patents are filed under CPC C04B2235/405 (Iron group metals)?
- Our database includes 441 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/405 growing?
- Publication counts under this code: 48 in 2024 vs 24 in 2025 (latest complete years).