Patents
US 12761792 B2: Efficient sub-block erasing
- Granted
- 2026-10-13
- Filed
- 2022-08-01 application 17878490
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Storage devices contain a memory array that comprises memory devices for storing data. These memory devices can be arranged in a configuration of blocks that group a number of memory devices together. Often, blocks are the smallest unit that can be erased, however various storage devices can divide blocks into sub-blocks which can operate as unique blocks themselves. These sub-blocks can be seen as regular blocks to the storage device or host computer. However, the time needed to erase these increased number of operational sub-blocks decreases overall performance as more erase time is needed. Devices and methods described herein decrease overall erase times within a sub-block memory array by checking the status of related sub-blocks before processing an erase request for a particular sub-block. Each of the related sub-blocks can be erased alongside the particular sub-block if the status of the related sub-blocks provides for erasure without losing host data.
Source: PTBLXML, file of 2026-10-13 (ipgb20261013.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Sandisk Technologies, Inc. 4,933 patents | US company or organization | Milpitas, CA | SANDISK TECHNOLOGIES LLC State business registration FUZZY medium confidence: same name (legal endings aside) and state | PTBLXML, file of 2026-10-13 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Sagar Uttarwar | Bangalore, IN | 4 | PTBLXML, file of 2026-10-13 | |
| Disha Gundecha | Pune, IN | 6 | PTBLXML, file of 2026-10-13 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G06F | Electric digital data processing | G06F3/061 | PTBLXML, file of 2026-10-13 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-04-25 | Release of security interest Partial release of security interests | JPMORGAN CHASE BANK, N.A., AS AGENT signed 2025-04-24 | SANDISK TECHNOLOGIES, INC. MILPITAS, CA | 71382/1 | PASDL, file of 2026-10-15 |
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.