Patents
US 12694900 B2: Magnetic layer of a magnetic recording disk, and related magnetic recording disks
- Granted
- 2026-07-28
- Filed
- 2022-02-21 application 17676650
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The present disclosure relates to magnetic recording disks having a magnetic recording layer that includes a plurality of three-dimensional segregant structures. Each three-dimensional segregant structure extends from a first radius of the recording disk to a second radius of the recording disk, and each three-dimensional segregant structure is made of a first segregant material. The magnetic recording layer also includes a plurality of magnetic grains between adjacent three-dimensional segregant structures, and a second segregant material between adjacent magnetic grains. The present disclosure also relates to corresponding methods of manufacturing such a magnetic recording layer.
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 |
|---|---|---|---|---|
| ShuaiGang Xiao | San Ramon, CA | 44 | PTBLXML, file of 2026-07-28 | |
| Thomas Young Chang | Menlo Park, CA | 60 | PTBLXML, file of 2026-07-28 | |
| Kim Yang Lee | Fremont, CA | PTBLXML, file of 2026-07-28 | ||
| Xiaomin Yang | Livermore, CA | 50 | 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 | G11B5/674 | 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 |
|---|---|---|---|---|---|
| 2022-03-11 | Assignment Assignment of assignor's interest | XIAO, SHUAIGANG signed 2022-02-24 CHANG, THOMAS YOUNG signed 2022-02-18 LEE, KIM YANG signed 2022-02-18 YANG, XIAOMIN signed 2022-02-22 | SEAGATE TECHNOLOGY LLC FREMONT, CA | 59246/337 | PASDL, file of 2026-08-13 |
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.