Patents
US 11171323 B2: Stabilized lithium metal powder for Li-ion application, composition and process
- Granted
- 2021-11-09
- Filed
- 2018-05-09 application 15975470
- Type
- Utility · 2 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The present invention provides a lithium metal powder protected by a substantially continuous layer of a polymer. Such a substantially continuous polymer layer provides improved protection such as compared to typical CO2-passivation.
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 |
|---|---|---|---|---|
| Marina Yakovleva | Gastonia, NC | 17 | PVGPATDIS, file of 2026-04-10 | |
| Yuan Gao | Greenwood Village, CO | 251 | PVGPATDIS, file of 2026-04-10 | |
| Kenneth Brian Fitch | Cherryville, NC | 14 | PVGPATDIS, file of 2026-04-10 | |
| Prakash Thyaga Palepu | Gastonia, NC | 3 | PVGPATDIS, file of 2026-04-10 | |
| Yangxing Li | Belmont, NC | 12 | PVGPATDIS, file of 2026-04-10 | |
| Christopher Jay Woltermann | Gastonia, NC | 2 | 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 | H01M4/134 | PVGPATDIS, file of 2026-04-10 |
| B22F | Working metallic powder; manufacture of articles from metallic powder; making metallic powder ; apparatus or devices specially adapted for metallic powder | B22F1/102 | 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 047327/0058 and 050900/0939 | CITIBANK, N.A. signed 2025-03-06 | LIVENT USA CORP. PHILADELPHIA, PA | 70433/759 | 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 | 58838/482 | ECORSEXC, file of 2026-09-25 |
| 2018-10-26 | Security interest Security interest Security interest | FMC LITHIUM USA CORP. signed 2018-10-01 | CITIBANK, N.A. NEW YORK, NY | 47327/58 | PASDL, file of 2026-10-15 |
| 2018-10-25 | Assignment Assignment of assignor's interest | FMC CORPORATION signed 2018-10-01 | FMC LITHIUM USA CORP. PHILADELPHIA, PA | 47306/669 | 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.