Patents
US 12763158 B2: Verify and read control techniques for memory devices
- Granted
- 2026-10-13
- Filed
- 2024-12-11 application 18977479
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The memory device includes a memory block that includes memory cells that are arranged in word lines and memory holes with varying diameters. The word lines are grouped into first and second groups based on memory hole diameter. Circuitry is configured to determine if the selected word line is in the first group or the second group. In response to the selected word line being in the first zone, the circuitry is configured to perform a memory operation using a first set of reference voltages. In response to the selected word line being in the second group, the circuitry is configured to perform the memory operation using a second set of reference voltages. The first and second sets of reference voltages are different for a plurality of data states and are similar for at least one data state at a highest threshold voltage range.
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 |
|---|---|---|---|---|
| Chengqing Hu | Milpitas, CA | PTBLXML, file of 2026-10-13 | ||
| Dong-il Moon | San Jose, CA | 10 | PTBLXML, file of 2026-10-13 | |
| Henry Chin | Fremont, CA | 112 | PTBLXML, file of 2026-10-13 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G11C | Static stores | G11C16/3459 | 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.