Patent US3244562A successfully refreshed from Google Patents.
US3244562A
Expired / Lapsed
US
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Battery lead oxide products
Assignee: ASSOCIATED LEAD Inc A CORPOF DEL
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Filing: 1961-02-16
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Granted: 1966-04-05
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Expires: 1981-02-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Coppersmith
- 👤 George J Vahrenkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:05
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/56; H01M4/57; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A LEAD STORAGE BATTERY PLATE COMPRISING A GRID HAVING A LEAD OXIDE COATING APPLIED TO IT PRODUCED BY SUBJECTING TO THE HYDROSETTING PROCESS A PASTE COMPRISING SULFURIC ACID AND A BATTERY OXIDE PRODUCT CONSISTING ESSENTIALLY OF A MIXTURE OF FINELY-DIVIDED PARTICLES OF METALLIC LEAD AND FINELY-DIVIDED PARTICLES OF LITHARGE MOST OF WHICH ARE IN THE TETRAGONAL CRYSTAL FORM, THE METALLIC LEAD PARTICLES CONSTITUTING AT LEAST ABOUT 38% BY WEIGHT OF THE PRODUCT AND BEING ESSENTIALLY FLAT PLATELETS HAVING AN AVERAGE THICKNESS OF BETWEEN ABOUT 1 AND 1.5 MICRONS.
References Cited (Backward Citations)
US538628A
Cited
US846444A
Cited
US1342953A
Cited
GB304231A
Cited
US1883014A
Cited
GB422887A
Cited
US2235487A
Cited
US2380096A
Cited
US2383220A
Cited
US2866840A
Cited
US2856447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |