Patents
US 12300802 B2: Methods and apparatus for producing nanometer scale particles for energy storage materials utilizing an electrosterically stabilized slurry in a media mill
- Granted
- 2025-05-13
- Filed
- 2022-03-15 application 17654915
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Disclosed herein are methods and apparatus for producing nanometer scale particles for electrochemical materials utilizing an electrosterically stabilized slurry in a media mill. The method includes adding to a media mill a feed substrate suspension including a liquid carrier medium and electrochemical feed substrate particles. The method further includes adding to the feed substrate suspension in the media mill an electrosteric dispersant that includes a polyelectrolyte. Still further, the method includes operating the media mill for a period of time to comminute the feed substrate particles, thereby forming nanometer scale particles having a (D90) particle size of less than about one micron, and recirculating for further grinding the nanometer scale particles from the media mill.
Source: PVGPATDIS, file of 2026-04-10 (ipg250513.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| U.S. Silica Company 18 patents | US company or organization | Katy, TX | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Ramanan Pitchumani | Hagerstown, MD | 3 | PVGPATDIS, file of 2026-04-10 | |
| William R. Wells | Hancock, MD | 61 | PVGPATDIS, file of 2026-04-10 | |
| David Earl Weller, JR. | Greencastle, PA | 9 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H01M | Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy | H01M4/0457 | PVGPATDIS, file of 2026-04-10 |
| H01G | Capacitors; capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices of the electrolytic type | H01G11/30 | PVGPATDIS, file of 2026-04-10 |
| B02C | Crushing, pulverising, or disintegrating in general; milling grain | B02C17/18 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E60/10 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-07-31 | Security interest Security interest Notice of grant of security interest in intellectual property (first lien) | U.S. SILICA COMPANY signed 2024-07-31 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT ISELIN, NJ | 68307/349 | PASDL, file of 2026-10-15 |
| 2022-03-15 | Assignment Assignment of assignor's interest | PITCHUMANI, RAMANAN signed 2022-03-15 WELLER, DAVID EARL, JR. signed 2022-03-15 WELLS, WILLIAM RICHARD signed 2022-03-15 | U.S. SILICA COMPANY KATY, TX | 59271/405 | ECORSEXC, file of 2026-09-25 |
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.