Rare-earth-free magnet patent tracker
If your roadmap is built to get away from Chinese rare-earth export licences, your competitors' patents are the early warning, and most of them are published in China first.
158 patent families in 12 months · 135 with a filing in China · 7 offices
Free: the latest weekly issue on these magnets and rare-earth-free motors, one plain-English entry per invention.
Patent families first published from 23 Oct 2025 to 22 Oct 2026
Iron nitride, Mn–Bi, Mn–Al–C, L10 FeNi and advanced ferrite magnets. 158 families (172 publications), against 190 in the 12 months before; the latest weeks are still arriving from the offices, so the gap is partly a delay.
By office
A family counts once in each office where a member has published.
| Office | Families |
|---|---|
| China (CNIPA) | 135 |
| WIPO (PCT) | 10 |
| United States (USPTO) | 6 |
| Japan (JPO) | 4 |
| Korea (KIPO) | 4 |
| Romania (OSIM) | 2 |
| Germany (DPMA) | 1 |
Most active applicants
Harmonised names from the source record; subsidiaries are not merged.
| Applicant | Families |
|---|---|
| Bgrimm Magnetic Fuyang Co Ltd | 8 |
| Anhui Sinomag Tech Co Ltd | 5 |
| Chongqing Lingda Magnets Tech Co Ltd | 5 |
| Sinosteel New Materials Co Ltd | 5 |
| Magnet Business Shenzhen Co Ltd | 4 |
8 of the 158 families
A selection, newest first, favouring families with a written summary; each shown by its latest publication.
- Ferrite sintered magnet
WO-2026196739-A1 · published 2026-09-24 · Proterial Ltd
Proterial claims a sintered strontium ferrite magnet with the hexagonal crystal structure used in all hard ferrites.
- Coating for iron-based magnets and associated methods
WO-2026183018-A1 · published 2026-09-03 · Niron Magnetics Inc
Niron Magnetics, the US iron nitride developer, applies for coatings that stop iron-based magnets degrading.
- Novel high-stability preparation process of doped ferrite magnetic steel (machine-translated title)
CN-122658869-A · published 2026-08-28 · Dongtai Dongbao Electromagnetic Material Tech Co Ltd
A Chinese application claims a route for doped ferrite magnets: additives at a second ball-milling after pre-sintering, pulsed-field pressing, graded sintering and ageing.
- Double-layer composite permanent magnetic ferrite magnetic shoe and preparation method thereof (machine-translated title)
CN-122638291-A · published 2026-08-25 · Hunan Aerospace Magnet & Magneto Co Ltd
A Chinese application claims an arc-shaped strontium ferrite tile sintered in one piece from two layers: a high-performance working face and a low-cost mounting face.
- Preparation method of high magnetic energy product rare earth doped permanent magnetic ferrite (machine-translated title)
CN-122627786-A · published 2026-08-25 · Shenzhen Xinyi Magnetic Mat Co Ltd
CN-122627786-A claims a ferrite doped with gadolinium and lanthanum, microwave-sintered in four stages.
- Multipolar tangential magnetization integral rotor punching structure and ferrite permanent magnet synchronous motor (machine-translated title)
CN-122639543-A · published 2026-08-25 · Shandong Univ
A Chinese application claims a rotor lamination for a ferrite motor with tangentially magnetised (spoke) magnets.
- Strontium ferrite/polyether-ether-ketone composite magnet and preparation method and application thereof (machine-translated title)
CN-122599225-A · published 2026-08-18 · Nanchang Univ; Shenzhen Xucai Tech Development Co Ltd
CN-122599225-A claims a bonded magnet of 84–95 parts strontium ferrite in PEEK, a heat-resistant plastic.
- MnBi-based magnet
WO-2026168979-A1 · published 2026-08-13 · LG Innotek Co Ltd; Nara Inst Of Science And Technology National University Corporation
LG Innotek and the Nara Institute of Science and Technology claim a manganese-bismuth (MnBi) magnet with 2–10 atomic per cent ruthenium.
Data to 22 Oct 2026 (latest publication held per office, including offices with no family above: CN 8 Sep 2026, DE 10 Sep 2026, EP 16 Sep 2026, JP 4 Sep 2026, KR 31 Aug 2026, TW 1 Apr 2026, US 15 Oct 2026, WO 24 Sep 2026). Counts are patent families, not granted rights. Sources: EPO Open Patent Services and Google Patents Public Data (CC BY 4.0). Information, not legal advice.
More
By technology: Iron nitride (Fe16N2) · Mn–Bi · Mn–Al–C · Advanced ferrites · L10 FeNi / tetrataenite · Rare-earth-free motor designs · August 2026 landscape · Methodology
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