Patents
US 12770653 B1: Heterogeneous integration of near field transducer components for heat-assisted magnetic recording heads
- Granted
- 2026-10-20
- Filed
- 2025-10-29 application 19372615
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Described are methods heterogeneous integration of epitaxial (crystalline) material onto a near field transducer (NFT) of a heat-assisted magnetic recording (HAMR) head in a way that promotes robustness and improved performance of the NFT. While constructing NFTs with plasmonic disks terminating in single crystal (epitaxial) pegs may be desirable, such pegs cannot be directly formed on the NFT, and heterogeneous integration can result in interfacial voids that interrupt thermal contact and lower structural robustness. As such, after heterogeneous integration of a highly crystalline peg, a portion of the peg is removed and backfilled to improve the interface while leaving a single crystal portion of the peg intact.
Source: PTBLXML, file of 2026-10-20 (ipgb20261020.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Seagate Technology 4,936 patents | US company or organization | Fremont, CA | PTBLXML, file of 2026-10-20 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Nestor Jr Dela Cruz Bareza | Londonderry, GB | PTBLXML, file of 2026-10-20 | ||
| Deepak Kumar Singh | Londonderry, GB | PTBLXML, file of 2026-10-20 | ||
| Amy Michelle Mackey | Claudy, IE | PTBLXML, file of 2026-10-20 | ||
| Brónagh Mitchell | Donegal, IE | PTBLXML, file of 2026-10-20 | ||
| Jeffery James Walter | Lino Lakes, MN | PTBLXML, file of 2026-10-20 | ||
| Lien Lee | Minnetonka, MN | 13 | PTBLXML, file of 2026-10-20 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G11B | Information storage based on relative movement between record carrier and transducer | G11B5/6082 | PTBLXML, file of 2026-10-20 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2026-09-04 | Assignment Assignment of assignor's interest | BAREZA, NESTOR DELA CRUZ, JR. signed 2025-10-27 SINGH, DEEPAK KUMAR signed 2025-10-27 MACKEY, AMY MICHELLE signed 2025-10-27 MITCHELL, BRÓNAGH signed 2025-10-27 WALTER, JEFFERY JAMES signed 2025-10-27 LEE, LIEN signed 2025-10-24 | SEAGATE TECHNOLOGY LLC FREMONT, CA | 75914/314 | PASDL, file of 2026-10-23 |
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.