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US3288643A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for making charged cadmium electrodes

Assignee: Union Carbide Corp
•
Filing: 1964-01-06
•
Granted: 1966-11-29
•
Expires: 1984-01-06
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Abstract

No abstract record available.

Inventors

  • 👤 Robert E Stark

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 11:52
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; C; C22; C22B; C22B17/00; H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/36; Y; Y02; Y02E; Y02E60/00; Y02E60/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 152 words
A PROCESS FOR THE MANUFACTURE OF CHARGED CADMIUM ELECTODES WHICH COMPRISES FORMING A HOMOGENEOUS MIXTURE COMPRISING FROM ABOUT 80 TO 90 WEIGHT PERCENT OF A CADMIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF CADMIUM OXIDE, CADMIUM HYDROXIDE, CADMIUM ACETATE, CADMIUM CARBONATE, CADMIUM CHLORIDE, CADMIUM CHLORATE, CADMIUM SULFATE AND CADMIUM NITRITE, AND FROM ABOUT 10 TO 20 WEIGHT PERCENT OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ZINC, BOTH BASED ON THE TOTAL WEIGHT OF THE MIXTURE, COMPRESSING SAID MIXTURE INTO A CONDUCTIVE CARRIER GRID TO ABOUT 40 TO 80 PERCENT OF THE THEORETICAL DENSITY AND IMMERSING THE GRID CONTAINING THE COMPRESSED MIXTURE IN AN ALKALINE SOLUTION SELECTED FROM THE GROUP CONSISTING OF POTASSIUM HYDROXIDE AND SODIUM HYDROXIDE HAVING A CONCENTRATION OF AT LEAST 6 NORMAL AT A TEMPERATURE OF ABOUT 100*C. FOR AT LEAST 5 MINUTES, REMOVING RESIDUAL HYDROXIDE AND DRYING THE THUS FORMED ELECTRODE IN AN INERT ATMOSPHERE.
Claim 2
Dependent Claim 152 words
A PROCESS FOR THE MANUFACTURE OF CHARGED CADMIUM ELECTODES WHICH COMPRISES FORMING A HOMOGENEOUS MIXTURE COMPRISING FROM ABOUT 80 TO 90 WEIGHT PERCENT OF A CADMIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF CADMIUM OXIDE, CADMIUM HYDROXIDE, CADMIUM ACETATE, CADMIUM CARBONATE, CADMIUM CHLORIDE, CADMIUM CHLORATE, CADMIUM SULFATE AND CADMIUM NITRITE, AND FROM ABOUT 10 TO 20 WEIGHT PERCENT OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ZINC, BOTH BASED ON THE TOTAL WEIGHT OF THE MIXTURE, COMPRESSING SAID MIXTURE INTO A CONDUCTIVE CARRIER GRID TO ABOUT 40 TO 80 PERCENT OF THE THEORETICAL DENSITY AND IMMERSING THE GRID CONTAINING THE COMPRESSED MIXTURE IN AN ALKALINE SOLUTION SELECTED FROM THE GROUP CONSISTING OF POTASSIUM HYDROXIDE AND SODIUM HYDROXIDE HAVING A CONCENTRATION OF AT LEAST 6 NORMAL AT A TEMPERATURE OF ABOUT 100*C. FOR AT LEAST 5 MINUTES, REMOVING RESIDUAL HYDROXIDE AND DRYING THE THUS FORMED ELECTRODE IN AN INERT ATMOSPHERE.

References Cited (Backward Citations)

US2934580A Cited
US2870234A Cited
US3048644A Cited
US3180761A Cited
US3228795A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-11-28 1970-05-30 1970-11-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-11-28 1974-05-30 1974-11-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-11-28 1978-05-30 1978-11-29 $7700.00 Window Closed / Lapsed

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