Patent US3457112A successfully refreshed from Google Patents.
US3457112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead-acid storage battery
Assignee: Robert Bosch GmbH
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Filing: 1966-03-04
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Granted: 1969-07-22
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Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 Harald Reber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:45
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/34; H01M10/342; H01M4/00; H01M4/02; H01M4/14; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A HERMETICALLY SEALED LEAD-ACID STORAGE BATTERY HAVING A GAS SPACE, IN COMBINATION, ELECTRODES OF OPPOSITE POLARITY, EACH OF SAID ELECTRODES COMPRISING GRID PLATE MEANS CONSISTING ESSENTIALLY OF LEAD AND BEING FREE OF ANTIMONY, AND AN ACTIVE LEAD MASS SUPPORTED BY SAID GRID PLATE MEANS, RESPECTIVELY; AND A NON-FLUID ELECTROLYTE INTERPOSED BETWEEN AND CONTACTING ADJACENT ELECTRODES OF OPPOSITE POLARITY, SAID NONFLUID ELECTROLYTE CONSISTING ESSENTIALLY OF A MIXTURE OF AQUEOUS SULFURIC ACID AND A THICKENING AGENT IN AN AMOUNT SUFFICIENT TO RENDER SAID ELECTROLYTE NON-FLUID AND INCLUDING AN ALKALINE EARTH METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE SILICATES, SULFATES AND PHOSPHATES OF CALCIUM AND STRONTIUM AND BEING PRESENT IN AMOUNT IN EXCESS OF 0.2% OF THE WEIGHT OF SAID AQUEOUS SULURIC ACID.
Claim 2
Dependent Claim
123 words
IN A HERMETICALLY SEALED LEAD-ACID STORAGE BATTERY HAVING A GAS SPACE, IN COMBINATION, ELECTRODES OF OPPOSITE POLARITY, EACH OF SAID ELECTRODES COMPRISING GRID PLATE MEANS CONSISTING ESSENTIALLY OF LEAD AND BEING FREE OF ANTIMONY, AND AN ACTIVE LEAD MASS SUPPORTED BY SAID GRID PLATE MEANS, RESPECTIVELY; AND A NON-FLUID ELECTROLYTE INTERPOSED BETWEEN AND CONTACTING ADJACENT ELECTRODES OF OPPOSITE POLARITY, SAID NONFLUID ELECTROLYTE CONSISTING ESSENTIALLY OF A MIXTURE OF AQUEOUS SULFURIC ACID AND A THICKENING AGENT IN AN AMOUNT SUFFICIENT TO RENDER SAID ELECTROLYTE NON-FLUID AND INCLUDING AN ALKALINE EARTH METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE SILICATES, SULFATES AND PHOSPHATES OF CALCIUM AND STRONTIUM AND BEING PRESENT IN AMOUNT IN EXCESS OF 0.2% OF THE WEIGHT OF SAID AQUEOUS SULURIC ACID.
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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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |