US3576700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength joined porous block structures and method of making same
Assignee: Alcoa Corp
•
Filing: 1969-11-03
•
Granted: 1971-04-27
•
Expires: 1989-11-03
Abstract
Abstract A HIGH STRENGTH STRUCTURE SUITABLE FOR USE AS AN ELECTRODE IS MADE FROM A PLURALITY OF POROUS BLOCKS JOINED TOGETHER BY A SEAM MIXTURE WHICH INCLUDES A CARBONIZABLE BINDER MATERIAL. BEFORE THE BLOCKS ARE JOINED TOGETHER, SURFACES OF THE BLOCKS ARE COATED WITH A MASTIC COMPRISING A MIXTURE OF A CARBONIZABLE BINDER MAY FINELY DIVIDED HEAT RESISTANT PARTICLES, THE PARTICLES FORMING 30 TO 75 PERCENT BY WEIGHT OF THE MASTIC. THE ASSEMBLY, I.E., THE COATED BLOCKS AND SEAM MIXTURE IS THEN BAKED FOR A LENGTH OF TIME AND AT A TEMPERATURE SUFFICIENT TO CARBONIZE THE BINDERS.
Inventors
- 👤 Manuel Benjamin Dell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:51
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; Y; Y10; Y10T; Y10T428/00; Y10T428/18; Y10T428/19; Y10T428/192; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249981
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |