Patents
US 12694897 B1: Near field transducers having magnetic inlays for improved heat-assisted magnetic recording
- Granted
- 2026-07-28
- Filed
- 2025-05-22 application 19215617
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Described are heat-assisted magnetic recording heads that include near-field transducers having a magnetic inlay incorporated into the emitter disk, for example to improve write field properties such as the write field angle (decrease) and/or write field strength (increase), and which can contribute to increased areal density capability. Aspects involve applying an inlay of a magnetic material to the emitter disk of a near-field transducer. The inlay may optionally extend into the sunken disk of the near-field transducer. The inlay thickness, length, shape, and recess from the media-facing surface may be selected or adjusted to achieve desired magnetic, optical, and/or thermal characteristics.
Source: PTBLXML, file of 2026-07-28 (ipgb20260728.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Seagate Technology LLC 4,936 patents | US company or organization | Fremont, CA | PTBLXML, file of 2026-07-28 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Weibin Chen | Bloomington, MN | 49 | PTBLXML, file of 2026-07-28 | |
| Jianhua Xue | Eden Prairie, MN | 51 | PTBLXML, file of 2026-07-28 | |
| Michael Allen Seigler | Eden Prairie, MN | 126 | PTBLXML, file of 2026-07-28 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G11B | Information storage based on relative movement between record carrier and transducer | G11B5/4866 | PTBLXML, file of 2026-07-28 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2026-06-25 | Assignment Assignment of assignor's interest | CHEN, WEIBIN signed 2025-05-15 XUE, JIANHUA signed 2025-05-15 SEIGLER, MICHAEL ALLEN signed 2025-05-16 | SEAGATE TECHNOLOGY LLC FREMONT, CA | 75084/686 | PASDL, file of 2026-08-08 |
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.