US3000997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leclanche type dry cells of high storageability
Assignee: Individual
•
Filing: 1960-01-05
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Granted: 1961-09-19
•
Expires: 1980-01-05
Abstract
No abstract record available.
Inventors
- 👤 Clifton T Trigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:59
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/628; H01M6/00; H01M6/04; H01M6/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A LECLANCHE TYPE DRY CELL COMPRISING A ZINC CAN, A DEPOLARIZER MIX CONSISTING ESSENTIALLY OF MANGANESE DIOXIDE, CARBON BLACK AND AMMONIUM CHLORIDE, AND AN ELECTROLYTE CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF AMMONIUM CHLORIDE AND ZINC CHLORIDE, CHARACTERIZED IN THAT SAID DEPOLARIZER MIX CONTAINS ABOUT 20 TO 30% BY WEIGHT OF AMMONIUM CHLORIDE WHILE THE ELECTROLYTE CONTAINS ABOUT 25% BY WEIGHT OF AMMONIUM CHLORIDE AND ABOUT 1 1/2 TO 2 1/2% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CHROMATE, POTASSIUM CHROMATE, LITHIUM CHROMATE, SODIUM CHROMATE, CALCIUM CHROMATE AND MAGNESIUM CHROMATE.
Claim 2
Dependent Claim
94 words
IN A LECLANCHE TYPE DRY CELL COMPRISING A ZINC CAN, A DEPOLARIZER MIX CONSISTING ESSENTIALLY OF MANGANESE DIOXIDE, CARBON BLACK AND AMMONIUM CHLORIDE, AND AN ELECTROLYTE CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF AMMONIUM CHLORIDE AND ZINC CHLORIDE, CHARACTERIZED IN THAT SAID DEPOLARIZER MIX CONTAINS ABOUT 20 TO 30% BY WEIGHT OF AMMONIUM CHLORIDE WHILE THE ELECTROLYTE CONTAINS ABOUT 25% BY WEIGHT OF AMMONIUM CHLORIDE AND ABOUT 1 1/2 TO 2 1/2% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CHROMATE, POTASSIUM CHROMATE, LITHIUM CHROMATE, SODIUM CHROMATE, CALCIUM CHROMATE AND MAGNESIUM CHROMATE.
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |