US2952570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making sintered type cadmium electrodes
Assignee: Union Carbide Corp
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Filing: 1958-05-20
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Granted: 1960-09-13
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Expires: 1978-05-20
Abstract
No abstract record available.
Inventors
- 👤 Thayer A Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:08
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; 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
100 words
A PROCESS FOR MAKING A CADMIUM ELECTRODE FOR A NICKEL-CADMIUM SECONDARY SELL WHICH PROCESS COMPRISES IMPREGNATING A POROUS NICKEL PLAQUE WITH CADMIUM NITRATE BY DIPPING SAID PLAQUE IN A SATURATED CADMIUM NITRATE AQUEOUS SOLUTION FOR 10 TO 15 MINUTES, AND THERMALLY CONVERTING SAID IMPREGNATED CADMIUM NITRATE TO CADMIUM OXIDE BY PLACING THE IMPREGNATED PLAQUE IN AN AIR VENTILATED OVEN WHICH HAS BEEN HEATED TO A TEMPERATURE BETWEEN 350*C. TO 900*C., FOR A PERIOD OF TIME SUFFICIENT FOR SAID CONVERSION TO TAKE PLACE, AND SUBSEQUENT REPETITION OF THE ENTIRE PROCESS UNTIL THE DESIRED ACTIVE CADMIUM WEIGHT IS ADDED TO THE PLAQUE.
Claim 2
Dependent Claim
100 words
A PROCESS FOR MAKING A CADMIUM ELECTRODE FOR A NICKEL-CADMIUM SECONDARY SELL WHICH PROCESS COMPRISES IMPREGNATING A POROUS NICKEL PLAQUE WITH CADMIUM NITRATE BY DIPPING SAID PLAQUE IN A SATURATED CADMIUM NITRATE AQUEOUS SOLUTION FOR 10 TO 15 MINUTES, AND THERMALLY CONVERTING SAID IMPREGNATED CADMIUM NITRATE TO CADMIUM OXIDE BY PLACING THE IMPREGNATED PLAQUE IN AN AIR VENTILATED OVEN WHICH HAS BEEN HEATED TO A TEMPERATURE BETWEEN 350*C. TO 900*C., FOR A PERIOD OF TIME SUFFICIENT FOR SAID CONVERSION TO TAKE PLACE, AND SUBSEQUENT REPETITION OF THE ENTIRE PROCESS UNTIL THE DESIRED ACTIVE CADMIUM WEIGHT IS ADDED TO THE PLAQUE.
References Cited (Backward Citations)
US1087236A
Cited
GB331540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |