Patents
US 12706235 B2: Thermally stable, cladded permanent magnets, and compositions and methods for making the same
- Granted
- 2026-08-11
- Filed
- 2023-02-24 application 18114199
- Type
- Utility · 25 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The disclosed technology provides a nanofunctionalized magnetic material feedstock comprising: from 50 wt % to 99.5 wt % of magnetic microparticles having an average microparticle effective diameter from 1 micron to 500 microns; from 0.4 wt % to 40 wt % of one or more rare earth elements; and from 0.1 wt % to 10 wt % of metal-containing grain-refining nanoparticles, wherein at least 1 wt % of the grain-refining nanoparticles are chemically and/or physically disposed on surfaces of the magnetic microparticles. The nanofunctionalized magnetic material feedstock is processed using high-throughput laser-based additive manufacturing to optimize the architecture of NdFeB or other magnets, generating site-specific, demagnetization-resistant microstructures. This disclosure teaches a rapid, single-step laser-based process to tailor the easy axis alignment, grain size, and microstructure of a permanent magnet at corners and edges to resist demagnetization.
Source: PTBLXML, file of 2026-08-11 (ipgb20260811.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| HRL Laboratories, LLC 1,601 patents | US company or organization | Malibu, CA | PTBLXML, file of 2026-08-11 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Brennan Yahata | Santa Barbara, CA | 44 | PTBLXML, file of 2026-08-11 | |
| Adam Gross | Santa Monica, CA | PTBLXML, file of 2026-08-11 | ||
| Christopher Henry | Thousand Oaks, CA | PTBLXML, file of 2026-08-11 | ||
| Darby Laplant | Ventura, CA | 10 | PTBLXML, file of 2026-08-11 | |
| Amber Sucich | Calabasas, CA | 6 | PTBLXML, file of 2026-08-11 | |
| Raymond Nguyen | Anaheim, CA | PTBLXML, file of 2026-08-11 | ||
| Christine Kim | Los Angeles, CA | PTBLXML, file of 2026-08-11 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01F | Magnets; inductances; transformers; selection of materials for their magnetic properties | H01F1/0551 | PTBLXML, file of 2026-08-11 |
| B82Y | Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures | B82Y25/00 | PTBLXML, file of 2026-08-11 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-02-24 | Assignment Assignment of assignor's interest | YAHATA, BRENNAN signed 2022-03-11 GROSS, ADAM signed 2022-03-11 HENRY, CHRISTOPHER signed 2022-03-11 LAPLANT, DARBY signed 2022-03-17 SUCICH, AMBER signed 2022-03-11 NGUYEN, RAYMOND signed 2022-03-11 KIM, CHRISTINE signed 2022-03-11 | HRL LABORATORIES, LLC MALIBU, CA | 62802/665 | PASDL, file of 2026-08-13 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.