Methods of making sintered articles
US-2016375493-A1 · Dec 29, 2016 · US
Iron
Iron · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B22F2301/35 |
| Official title | Iron |
| Display label | Iron |
| Total patents | 1,238 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 58 |
| 2017 | 65 |
| 2018 | 110 |
| 2019 | 120 |
| 2020 | 133 |
| 2021 | 150 |
| 2022 | 141 |
| 2023 | 156 |
| 2024 | 143 |
| 2025 | 120 |
| 2026 | 25 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing a valve seat ring
US-2016375494-A1 · Dec 29, 2016 · US
Iron-based sintered alloy and method for producing the same
US-2016376687-A1 · Dec 29, 2016 · US
Density enhancement methods and compositions
US-2016368057-A1 · Dec 22, 2016 · US
Alloy Powder, and Shot Material for Shot Peening, Powder Metallurgical Composition and Iron-Based Sintered Alloy Using the Same
US-2016346837-A1 · Dec 1, 2016 · US
Sintered bearing
US-2016348722-A1 · Dec 1, 2016 · US
Fuel injector
US-2016348629-A1 · Dec 1, 2016 · US
Precipitation-Hardening Stainless Steel Powder and Sintered Compact Thereof
US-2016333450-A1 · Nov 17, 2016 · US
Iron powder for dust cores
US-2016303652-A1 · Oct 20, 2016 · US
Soft Magnetic Composites for Electric Motors
US-2016307679-A1 · Oct 20, 2016 · US
Methods of fabricating a polycrystalline diamond compact
US-9453270-B1 · Sep 27, 2016 · US
Magnetic powder, and manufacturing method thereof
US-2016276074-A1 · Sep 22, 2016 · US
Multiple piece engine component
US-2016265362-A1 · Sep 15, 2016 · US
Sintered bearing
US-9441670-B2 · Sep 13, 2016 · US
Soft magnetic core having excellent high-current DC bias characteristics and core loss characteristics and method of manufacturing same
US-9443652-B2 · Sep 13, 2016 · US
Metal powder for powder metallurgy, compound, granulated powder, and sintered body
US-2016228948-A1 · Aug 11, 2016 · US
One-piece component and method for its production
US-9409234-B2 · Aug 9, 2016 · US
Metal powder for powder metallurgy, compound, granulated powder, and sintered body
US-2016222496-A1 · Aug 4, 2016 · US
Chromium-containing powder or granulated powder
US-2016214170-A1 · Jul 28, 2016 · US
Alloy steel powder for powder metallurgy and method of producing iron-based sintered body
US-2016214171-A1 · Jul 28, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B22F2301/35?
- CPC B22F2301/35 is the Cooperative Patent Classification code for “Iron.”
- How many patents are filed under CPC B22F2301/35 (Iron)?
- Our database includes 1,238 publications tagged with this CPC code.
- Is patent activity under CPC B22F2301/35 growing?
- Publication counts under this code: 143 in 2024 vs 120 in 2025 (latest complete years).