Patent US4448861A successfully refreshed from Google Patents.
US4448861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium-thionyl chloride cell with lithium surface alloys to reduce voltage delay
Assignee: Spectrum Brands Inc
•
Filing: 1983-06-24
•
Granted: 1984-05-15
•
Expires: 2003-06-24
Abstract
Abstract A lithium-thionyl chloride cell which has a lithium-aluminum alloy at the anode surface for reducing voltage delay.
Inventors
- 👤 Niles A. Fleischer
- 👤 Ronald J. Ekern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:45
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M4/08; H01M4/12; H01M4/36; H01M4/38; H01M4/40; H01M6/00; H01M6/14; H01M6/50; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
33 words
In a lithium-thionyl chloride cell, the improvement for reducing voltage delay which comprises using an anode consisting of a lithium substrate having a thin lithium-aluminum alloy at the anode surface exposed to electrolyte.
Claim 2
Dependent Claim
33 words
In a lithium-thionyl chloride cell, the improvement for reducing voltage delay which comprises using an anode consisting of a lithium substrate having a thin lithium-aluminum alloy at the anode surface exposed to electrolyte.
Claim 3
Dependent Claim
27 words
A lithium thionyl chloride cell in accordance with claim 1 wherein said anode surface is formed by initially laminating a thin aluminum foil to said lithium substrate.
Claim 4
Dependent Claim
23 words
A cell in accordance with claim 2 wherein said aluminum foil has about 1% to about 14% the thickness of said lithium subtrate.
Claim 5
Independent Claim
36 words
The method for reducing voltage delay in a lithium-thionyl chloride cell which comprises employing as anode in said cell a body consisting of lithium having a thin lithium-aluminum alloy at the anode surface exposed to electrolyte.
Claim 6
Independent Claim
36 words
The method for reducing voltage delay in a lithium-thionyl chloride cell which comprises employing as anode in said cell a body consisting of lithium having a thin lithium-aluminum alloy at the anode surface exposed to electrolyte.
Claim 7
Dependent Claim
24 words
The method in accordance with claim 4 wherein said anode surface is formed by initially laminating a thin aluminum foil to said lithium body.
Claim 8
Dependent Claim
23 words
The method in accordance with claim 5 wherein said aluminum foil has about 1% to about 14% the thickness of said lithium body.
References Cited (Backward Citations)
GB1409307A
Cited
US3926669A
Cited
US4091152A
Cited
US4093784A
Cited
US4143214A
Cited
US4335191A
Cited
US4318969A
Cited
US4327159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |