US3671320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery plate treatment process
Assignee: Gulton Industries Inc
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Filing: 1969-12-23
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Granted: 1972-06-20
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Expires: 1989-12-23
Abstract
Abstract A PROCESS AND APPARATUS FOR TREATING BATTERY PLATES FORMED BY IMPREGNATING A POROUS SUBSTRATE WITH A METALLIC NITRATE AND SUBJECTING THE IMPREGNATED SUBSTRATE TO AN ALKALINE EARTH HYDROXIDE FOR FORMATIN OF ACITVE MATERIAL IN THE FORM OF A METALLIC HYDROXIDE, WITH FORMATION OF SOLUBLE NITRATES AS A BY-PRODUCT, IN WHICH THE SOLUBLE NITRATES ARE PREVENTED FROM CREATING CONTAMINATIN OF THE PLATES, BY CATHODIZING THEM INTO AMMONIA AND CARBON DIOXIDE GAS IN A TANK HAVING A PAIR OF ELECTRODES AND ONE OR MORE INSULATED ELECTRICALLY FLOATING METALLIC BAFFLE PLATES BETWEEN THE ELECTRODES.
Inventors
- 👤 Bernard B Herman
- 👤 Vincent P Farley Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:01
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: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |