Heat treatable magnets having improved alignment through application of external magnetic field during binder-assisted molding
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United States of America Patent
Stats
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Nov 29, 2022
Grant Date -
Aug 8, 2019
app pub date -
Nov 7, 2018
filing date -
Nov 9, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
Improved manufacturing processes and resulting anisotropic permanent magnets, such as for example alnico permanent magnets, having highly controlled and aligned microstructure in the solid state are provided. A certain process embodiment involves applying a particular orientation and strength of magnetic field to loose, binder-coated magnet alloy powder particles in a compact-forming device as they are being formed into a compact in order to preferentially align the magnet alloy powder particles in the compact. The preferential alignment of the magnet alloy powder particle is locked in place in the compact by the binder after compact forming is complete. After removal from the device, the compact can be subjected to a subsequent sintering or other heat treating operation.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| US | A1 | US20230146566 | Sep 26, 2022 |
International Classification(s)
- 2018 Application Filing Year
- H01F Class
- 2527 Applications Filed
- 1854 Patents Issued To-Date
- 73.37 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01F Class
- 0 % this patent is cited more than
- 3 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 29, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 29, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 29, 2034 |
