Patents
US 12770644 B1: Magnetic write pole with low magnetic moment wrapper
- Granted
- 2026-10-20
- Filed
- 2025-07-18 application 19273710
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Described are recording heads for magnetic writing of data in a disk drive, such as a heat-assisted magnetic recording disk drive, and in particular to write pole constructions that employ a low magnetic moment material disposed around the top and sides of the write pole tip. Accordingly, a low magnetic moment wrapper may disposed around a write pole, which may function to reduce side track erasure effects by setting up a magnetization gradient at the write pole edges to thereby control the erasure field.
Source: PTBLXML, file of 2026-10-20 (ipgb20261020.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 2026-10-20 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Mourad Benakli | Eden Prairie, MN | 57 | PTBLXML, file of 2026-10-20 | |
| Jianhua Xue | Maple Grove, MN | 51 | PTBLXML, file of 2026-10-20 | |
| Michael Allen Seigler | Eden Prairie, MN | 126 | 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 | G11B5/127 | 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 |
|---|---|---|---|---|---|
| 2026-05-08 | Assignment Assignment of assignor's interest | BENAKLI, MOURAD signed 2025-07-08 XUE, JIANHUA signed 2025-07-07 SEIGLER, MICHAEL ALLEN signed 2025-07-07 | SEAGATE TECHNOLOGY LLC FREMONT, CA | 74602/909 | 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.