US4524115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage stabilizing agents for cells
Assignee: Spectrum Brands Inc
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Filing: 1982-11-19
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Granted: 1985-06-18
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Expires: 2002-11-19
Abstract
Abstract A cell, having a metallic hydroxide, oxide, oxyhydroxide or hydrated oxide added to the cathode. The addition of these compositions to a nonaqueous cell reduces the open circuit voltage (OCV) of a fresh cell in a relatively short period of time; therefore obviating the need for burning in new cells.
Inventors
- 👤 John W. Paulson
- 👤 David J. Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:08
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/50; H01M4/00; H01M4/02; H01M4/36
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
59 words
A process for reducing the open circuit voltage of a fresh nonaqueous lithium cell, the cell including a lithium based anode, an electrolyte, and a cathode, the process comprising: (a) blending lithium hydroxide, the components of the cathode, and graphite into a mixture; (b) compressing the mixture into pellet form, the pellet forming the cathode for the above cell.
Claim 2
Dependent Claim
59 words
A process for reducing the open circuit voltage of a fresh nonaqueous lithium cell, the cell including a lithium based anode, an electrolyte, and a cathode, the process comprising: (a) blending lithium hydroxide, the components of the cathode, and graphite into a mixture; (b) compressing the mixture into pellet form, the pellet forming the cathode for the above cell.
Claim 3
Dependent Claim
11 words
The process according to claim 1 wherein the pellet is sintered.
References Cited (Backward Citations)
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US4163829A
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US4336315A
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US4306005A
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US4332869A
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US4383014A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |