Preservation of strain in iron nitride magnet
US-2017365381-A1 · Dec 21, 2017 · US
and IIIa elements, e.g. Nd2Fe14B
and IIIa elements, e.g. Nd2Fe14B · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F1/057 |
| Official title | and IIIa elements, e.g. Nd2Fe14B |
| Display label | and IIIa elements, e.g. Nd2Fe14B |
| Total patents | 323 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 22 |
| 2016 | 20 |
| 2017 | 20 |
| 2018 | 44 |
| 2019 | 33 |
| 2020 | 46 |
| 2021 | 32 |
| 2022 | 40 |
| 2023 | 18 |
| 2024 | 28 |
| 2025 | 17 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rare earth thin-film magnet and method for producing same
US-2017356081-A1 · Dec 14, 2017 · US
Method for recycling at least one magnet of an electric machine
US-2017355183-A1 · Dec 14, 2017 · US
NdFeB permanent magnet and method for producing the same
US-9805850-B2 · Oct 31, 2017 · US
Corrosion-resistant magnetic article
US-9775974-B2 · Oct 3, 2017 · US
Production method for r-t-b sintered magnet
US-2017263379-A1 · Sep 14, 2017 · US
Method for producing rare earth magnets, and rare earth magnets
US-9761358-B2 · Sep 12, 2017 · US
Rare earth sintered magnet and making method
US-9734947-B2 · Aug 15, 2017 · US
Directed self-assembly of electronic components using diamagnetic levitation
US-2017229330-A1 · Aug 10, 2017 · US
Neodymium-iron-boron magnet with selective surface modification, and method of producing same
US-2017213626-A1 · Jul 27, 2017 · US
Compact undulator system and methods
US-2017200543-A1 · Jul 13, 2017 · US
Alloy for r-t-b-based rare earth sintered magnet and manufacturing method thereof, and manufacturing method of r-t-b-based rare earth sintered magnet
US-2017162305-A1 · Jun 8, 2017 · US
Methods of Making Physical Unclonable Functions Having Magnetic and Non-Magnetic Particles
US-2017103834-A1 · Apr 13, 2017 · US
Additive manufacturing of magnets
US-2017092400-A1 · Mar 30, 2017 · US
Compact undulator system and methods
US-9607745-B2 · Mar 28, 2017 · US
Magnet package and method for producing a magnet package
US-9601858-B2 · Mar 21, 2017 · US
Corrosion-resistant magnetic article
US-2017056631-A1 · Mar 2, 2017 · US
Rare-earth permanent magnet
US-2017047151-A1 · Feb 16, 2017 · US
R-T-B based sintered magnet
US-9514869-B2 · Dec 6, 2016 · US
Rare earth thin film magnet, process for producing same, and target for forming rare earth thin film magnet
US-2016343482-A1 · Nov 24, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F1/057?
- CPC H01F1/057 is the Cooperative Patent Classification code for “and IIIa elements, e.g. Nd2Fe14B.”
- How many patents are filed under CPC H01F1/057 (and IIIa elements, e.g. Nd2Fe14B)?
- Our database includes 323 publications tagged with this CPC code.
- Is patent activity under CPC H01F1/057 growing?
- Publication counts under this code: 28 in 2024 vs 17 in 2025 (latest complete years).