Patents
US 12761295 B2: Magnetoresistive element having an out-of-plane sensitivity axis and having reduced hysteresis and increased working field range
- Granted
- 2026-10-13
- Filed
- 2024-02-13 application 19156467
- Type
- Utility · 11 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Magnetoresistive element (20) for sensing an external magnetic field, comprising a tunnel barrier layer (22) sandwiched between a ferromagnetic reference layer (21) having a pinned reference magnetization (210), and a ferromagnetic sense layer (23) having a sense magnetization (230), wherein the reference, tunnel barrier, and sense layers (21, 22, 23) are stacked perpendicular to a layer plane (PL) thereof. The reference magnetization (210) is oriented substantially perpendicular to the layer plane (PL), and the sense magnetization (230) is oriented substantially parallel to the layer plane (PL). At least the sense layer (23) has an annular cross-section in the layer plane (PL), with an inner diameter (Dint) and an outer diameter (Dout). The sense magnetization (230) has a closed flux path configuration that is orientable either in the clockwise or counterclockwise direction. The inner diameter (Dintt) is larger than 300 nm, and a difference between the inner and outer diameters (Dint, Dout) is greater than 150 nm.
Source: PTBLXML, file of 2026-10-13 (ipgb20261013.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Allegro MicroSystems, LLC 910 patents | US company or organization | Manchester, NH | ALLEGRO MICROSYSTEMS, INC. SEC filer FUZZY low confidence: same name (legal endings aside), one of each nationally | PTBLXML, file of 2026-10-13 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Salim Dounia | Grenoble, FR | 3 | PTBLXML, file of 2026-10-13 | |
| Andrey Timopheev | Vif, FR | 14 | PTBLXML, file of 2026-10-13 | |
| Nikita Strelkov | Meylan, FR | 8 | PTBLXML, file of 2026-10-13 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01R | Measuring electric variables; measuring magnetic variables | G01R33/093 | PTBLXML, file of 2026-10-13 |
| H10N | Electric solid-state devices not otherwise provided for | H10N50/10 | PTBLXML, file of 2026-10-13 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
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.