US2642628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a wet cathode portion
Assignee: Union Carbide Corp
•
Filing: 1948-12-22
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Granted: 1953-06-23
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Expires: 1968-12-22
Abstract
No abstract record available.
Inventors
- 👤 Zimmerman Herman Meredith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:48
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M4/08; H01M12/00; H01M12/04; H01M12/06; H01M4/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE PROCESS OF FORMING A DRY CELL HAVING A THIN WET MIX CAKE OF CARBON BLACK, WHICH BLACK IS INITIALLY FLUFFY, WHICH COMPRISES SPREADING A LAYER OF CARBON BLACK WITHIN A MOLD RING CONTIGUOUS THE EDGES OF THE BLACK, PLACING ON THE LAYER OF CARBON BLACK IN THE MOLD RING A LAYER OF BIBULOUS MATERIAL WHICH CARRIES AN AMOUNT OF LIQUID SUFFICIENT TO EFFECT A BONDING OF PARTICLES OF THE CARBON BLACK THROUGHTOUT THE EXTENT THEREOF, COMPRESSING THE CARBON BLACK AND LAYER OF BIBULOUS MATERIAL SUBSTANTIALLY UNIFORMED OVER THE ENTIRE AREA OF THE LAYER OF CARBON BLACK AND WETTING THE CARBON BLACK WITH LIQUID PRESSED OUT OF THE BIBULOUS MATERIAL.
Claim 2
Dependent Claim
110 words
THE PROCESS OF FORMING A DRY CELL HAVING A THIN WET MIX CAKE OF CARBON BLACK, WHICH BLACK IS INITIALLY FLUFFY, WHICH COMPRISES SPREADING A LAYER OF CARBON BLACK WITHIN A MOLD RING CONTIGUOUS THE EDGES OF THE BLACK, PLACING ON THE LAYER OF CARBON BLACK IN THE MOLD RING A LAYER OF BIBULOUS MATERIAL WHICH CARRIES AN AMOUNT OF LIQUID SUFFICIENT TO EFFECT A BONDING OF PARTICLES OF THE CARBON BLACK THROUGHTOUT THE EXTENT THEREOF, COMPRESSING THE CARBON BLACK AND LAYER OF BIBULOUS MATERIAL SUBSTANTIALLY UNIFORMED OVER THE ENTIRE AREA OF THE LAYER OF CARBON BLACK AND WETTING THE CARBON BLACK WITH LIQUID PRESSED OUT OF THE BIBULOUS MATERIAL.
References Cited (Backward Citations)
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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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |