US3634144A
Expired / Lapsed
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Process for preparing lithium-filled foraminous metal bodies
Assignee: Foote Mineral Co
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Filing: 1970-07-14
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Granted: 1972-01-11
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Expires: 1990-07-14
Abstract
Abstract A foraminous metal substrate is oxidized to form a surface film of metal oxide throughout the foraminous areas of the metal and immersed in a molten lithium bath to fill the foraminous substrate with lithium.
Inventors
- 👤 Barry Douglas Hanawalt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:59
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; C; C23; C23C; C23C2/00; C23C2/04; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
36 words
The method of claim 1 wherein the foraminous metal substrate is selected from the group consisting of nickel, iron, copper, and nickel, iron and copper-based alloys in which the nickel, iron copper are the principal components.
Claim 2
Dependent Claim
13 words
The method of claim 2 wherein the foraminous metal substrate is low-carbon steel.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the metal substrate is oxidized at a temperature of at least 300* C.
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein oxidation occurs at a temperature of from about300* C. to 1,500* C.
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein the metal substrate is oxidized to red heat.
Claim 6
Dependent Claim
83 words
The method of claim 2 wherein the metal substrate is selected from the group consisting of nickel, iron and nickel and iron alloys in which nickel and iron are the principal components wherein oxidation occurs at temperatures ranging from about 350* C. to about 1,350* C. for 60 minutes to a few seconds, respectively. , 8. The method of claim 3 wherein oxidation occurs at temperatures ranging from about600* C. to about 1,000* C. for about 40 minutes to a few seconds, respectively.
Claim 7
Dependent Claim
51 words
The method of claim 2 wherein the metal substrate is selected from the group consisting of copper and copper-based alloys in which copper is the principal component wherein oxidation occurs at temperatures ranging from about 400* C. to about t1,000* C. for about 40 minutes to parts of a second, respectively.
Claim 8
Dependent Claim
26 words
The method of claim 1 wherein the molten lithium bath is selected from the group consisting of elemental lithium and lithium-based alloys of aluminum and magnesium.
Claim 9
Dependent Claim
22 words
The method of claim 1 wherein the molten lithium bath is elemental lithium maintained at a temperature of above about 180* C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |