US3284237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal impregnating process for negative electrodes
Assignee: GTE Sylvania Inc
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Filing: 1965-04-16
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Granted: 1966-11-08
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Expires: 1985-04-16
Abstract
No abstract record available.
Inventors
- 👤 Robert L Lambert
- 👤 Russell E Palmateer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:28
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/26; H01M4/28; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A PROCESS FOR PREPARING ELECTRODES FOR ALKALINE BATTERIES, THE STEPS COMPRISING: IMPREGNATING A POROUS PLATE WITH A CADMIUM NITRATE COMPOUND AND HEATING THE IMPREGNATED PLATE IN A REDUCING ATMOSPHERE TO A TEMPERATURE IN THE RANGE OF ABOUT 185*C. TO 250* C., AT SUBSTANTIALLY AMBIENT PRESSURE AND FROM ABOUT ONE MINUTE TO TWO HOURS, TO REDUCE SAID COMPOUND TO METAL, SAID REDUCING ATMOSPHERE CONSISTING OF WATER VAPOR AND AMMONIA AND BEING CHARACTERIZED BY THE CAPABILITY TO COMBINE WITH THE COMPOUND TO FORM VOLATILE NEUTRAL SALTS.
Claim 2
Dependent Claim
85 words
IN A PROCESS FOR PREPARING ELECTRODES FOR ALKALINE BATTERIES, THE STEPS COMPRISING: IMPREGNATING A POROUS PLATE WITH A CADMIUM NITRATE COMPOUND AND HEATING THE IMPREGNATED PLATE IN A REDUCING ATMOSPHERE TO A TEMPERATURE IN THE RANGE OF ABOUT 185*C. TO 250* C., AT SUBSTANTIALLY AMBIENT PRESSURE AND FROM ABOUT ONE MINUTE TO TWO HOURS, TO REDUCE SAID COMPOUND TO METAL, SAID REDUCING ATMOSPHERE CONSISTING OF WATER VAPOR AND AMMONIA AND BEING CHARACTERIZED BY THE CAPABILITY TO COMBINE WITH THE COMPOUND TO FORM VOLATILE NEUTRAL SALTS.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |