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US2579743A Expired / Lapsed US ⏱️ 0.0 years remaining

Dry cell and electrode therefor

Assignee: Burgess Battery Co
•
Filing: 1949-12-31
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Granted: 1951-12-25
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Expires: 1969-12-31
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Abstract

No abstract record available.

Inventors

  • 👤 Kurlandsky Sam

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 23:35
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; Y; Y02; Y02E; Y02E60/00; Y02E60/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 112 words
IN A PRIMARY CELL CONTAINING A LIQUID ELECTROLYTE, A THIN, FLEXIBLE, SHEET-FORM, CONDUCTIVE CARBONACEOUS ELECTRODE IMPERVIOUS TO SAID ELECTROLYTE AND CAPABLE OF CONDUCTING ELECTRICAL CURRENT TO A CONDUCTIVE ELEMENT BY DRY CONTACT OF THE BROAD SURFACE THEREOF WITH SAID ELEMENT, COMPRISING A THIN, FLEXIBLE, FORAMINOUS, NON-CONDUCTIVE SHEET, A CONDUCTIVE CARBONACEOUS COMPOSITION COMPRISING CARBON PARTICLES AND A BINDER SUBSTANTIALLY FILLING THE OPENINGS OF SAID FORAMINOUS SHEET AND THINLY COATING BOTH SURFACES OF SAID SHEET, SAID CARBONACEOUS COMPOSITION HAVING MINUTE OPENINGS, THEREIN AND DEPRESSIONS IN THE SURFACES THEREOF, AND A WAX FILLER FILLING SAID MINUTE OPENINGS AND COVERING THE BOTTOMS OF SAID DEPRESSIONS, THE UNDEPRESSED AREAS OF SAID SURFACES BEING SUBSTANTIALLY FREE OF WAX.
Claim 2
Dependent Claim 112 words
IN A PRIMARY CELL CONTAINING A LIQUID ELECTROLYTE, A THIN, FLEXIBLE, SHEET-FORM, CONDUCTIVE CARBONACEOUS ELECTRODE IMPERVIOUS TO SAID ELECTROLYTE AND CAPABLE OF CONDUCTING ELECTRICAL CURRENT TO A CONDUCTIVE ELEMENT BY DRY CONTACT OF THE BROAD SURFACE THEREOF WITH SAID ELEMENT, COMPRISING A THIN, FLEXIBLE, FORAMINOUS, NON-CONDUCTIVE SHEET, A CONDUCTIVE CARBONACEOUS COMPOSITION COMPRISING CARBON PARTICLES AND A BINDER SUBSTANTIALLY FILLING THE OPENINGS OF SAID FORAMINOUS SHEET AND THINLY COATING BOTH SURFACES OF SAID SHEET, SAID CARBONACEOUS COMPOSITION HAVING MINUTE OPENINGS, THEREIN AND DEPRESSIONS IN THE SURFACES THEREOF, AND A WAX FILLER FILLING SAID MINUTE OPENINGS AND COVERING THE BOTTOMS OF SAID DEPRESSIONS, THE UNDEPRESSED AREAS OF SAID SURFACES BEING SUBSTANTIALLY FREE OF WAX.

References Cited (Backward Citations)

US690770A Cited
US1267349A Cited
GB145018A Cited
US1640039A Cited
US1639981A Cited
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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) 1954-12-24 1955-06-25 1955-12-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1958-12-24 1959-06-25 1959-12-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1962-12-24 1963-06-25 1963-12-25 $7700.00 Window Closed / Lapsed

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