Patents
US 11168384 B2: Process of preparing a lithium aluminum alloy
- Granted
- 2021-11-09
- Filed
- 2020-07-20 application 16933312
- Type
- Utility · 28 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A process for producing lithium aluminum ingots is provided. In one embodiment, the process includes preparing a master alloy comprising about 70 to 90 percent by weight lithium and 10 to 30 percent by weight aluminum and dissolving the master alloy in lithium at a temperature of from about 230° C. to 330° C. to provide a lithium aluminum ingot having between about 1500 to 2500 ppm by weight aluminum. In another embodiment, the process may produce a lithium aluminum ingot having about 0.001 to about 1.0 percent aluminum.
Source: PVGPATDIS, file of 2026-04-10 (ipg211109.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| FMC Lithium USA Corp. 4 patents | US company or organization | Philadelphia, PA | FMC LITHIUM USA CORP. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Younes Sina | Charlotte, NC | 2 | PVGPATDIS, file of 2026-04-10 | |
| William Arthur Greeter, JR. | Dallas, NC | 7 | PVGPATDIS, file of 2026-04-10 | |
| Barry McGeorge | Charlotte, NC | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C22C | Alloys | C22C24/00 | 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 |
|---|---|---|---|---|---|
| 2025-07-30 | Release of security interest Release of security interest | RIO TINTO FINANCE PLC signed 2025-07-30 | LIVENT USA CORP. PHILADELPHIA, PA ARCADIUM LITHIUM INTERMEDIATE IRL LIMITED DUBLIN 4 | 71886/172 | PASDL, file of 2026-10-15 |
| 2025-03-06 | Release of security interest Release of security interest in patent - reel/frame 061373/0148 | C ITIBANK, N.A. signed 2025-03-06 | LIVENT USA CORP. PHILADELPHIA, PA | 70433/732 | PASDL, file of 2026-10-15 |
| 2025-01-30 | Security interest Security interest Security interest | LIVENT USA CORP. signed 2025-01-30 ARCADIUM LITHIUM INTERMEDIATE IRL LIMITED signed 2025-01-30 | RIO TINTO FINANCE PLC LONDON | 70061/312 | PASDL, file of 2026-10-15 |
| 2022-09-02 | Security interest Security interest Notice of grant of security interest in patents | LIVENT USA CORP. signed 2022-09-01 | CITIBANK, N.A., AS ADMINISTRATIVE AGENT NEW YORK, NY | 61373/148 | PASDL, file of 2026-10-15 |
| 2022-01-25 | Name change Change of name | FMC LITHIUM USA CORP. signed 2021-11-15 | LIVENT USA CORP. PHILADELPHIA, PA | 58838/522 | PASDL, file of 2026-10-15 |
| 2021-02-03 | Assignment Assignment of assignor's interest | SINA, YOUNES signed 2020-08-04 MCGEORGE, BARRY signed 2020-08-05 GREETER, WILLIAM ARTHUR, JR. signed 2020-09-09 | FMC LITHIUM USA CORP. PHILADELPHIA, PA | 55125/240 | 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.