Patents
US 12668864 B2: Permanent magnet alloys for gap magnets
- Granted
- 2026-06-30
- Filed
- 2022-11-14 application 17803760
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Provided are Ce/Co/Cu permanent magnet alloys containing certain refractory metals, such as Ta and/or Hf, and optionally Fe which represent economically more favorable alternative to Sm-based magnets with respect to both material and processing costs and which retain and/or improve magnetic characteristics useful for GAP MAGNET applications.
Source: PTBLXML, file of 2026-06-30 (ipgb20260630.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Iowa State University Research Foundation, Inc. 581 patents | US company or organization | Ames, IA | PTBLXML, file of 2026-06-30 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Andriy Palasyuk | Ames, IA | 3 | PTBLXML, file of 2026-06-30 | |
| Tej Nath Lamichhane | Melrose, MA | 2 | PTBLXML, file of 2026-06-30 | |
| Olena Palasyuk | Ames, IA | 2 | PTBLXML, file of 2026-06-30 | |
| Vladimir Antropov | Ames, IA | 2 | PTBLXML, file of 2026-06-30 | |
| Paul C. Canfield | Ames, IA | PTBLXML, file of 2026-06-30 | ||
| Ralph W. McCallum | Santa Fe, NM | 5 | PTBLXML, file of 2026-06-30 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C22F | Changing the physical structure of non-ferrous metals and non-ferrous alloys | C22F1/10 | PTBLXML, file of 2026-06-30 |
| C22C | Alloys | C22C19/07 | PTBLXML, file of 2026-06-30 |
| C30B | Single-crystal growth ; unidirectional solidification of eutectic material or unidirectional demixing of eutectoid material; refining by zone-melting of material ; production of a homogeneous polycrystalline material with defined structure ; single crystals or homogeneous polycrystalline material with defined structure; after-treatment of single crystals or a homogeneous polycrystalline material with defined structure ; apparatus therefor | C30B29/52 | PTBLXML, file of 2026-06-30 |
| H01F | Magnets; inductances; transformers; selection of materials for their magnetic properties | H01F1/047 | PTBLXML, file of 2026-06-30 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2026-02-25 | Assignment Assignment of assignor's interest | PALASYUK, ANDRIY signed 2019-04-25 LAMICHHANE, TEJ NATH signed 2019-04-25 PALASYUK, OLENA signed 2019-04-26 CANFIELD, PAUL C. signed 2019-04-25 MCCALLUM, RALPH W. signed 2019-05-04 ANTROPOV, VLADIMIR signed 2019-04-26 | IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC. AMES, IA | 73885/731 | PASDL, file of 2026-10-15 |
| 2023-05-09 | Government interest Confirmatory license | IOWA STATE UNIVERSITY RESEARCH FOUNDATION signed 2023-03-27 | UNITED STATES DEPARTMENT OF ENERGY WASHINGTON, DC | 63588/640 | PASDL, file of 2026-10-15 |
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.