US2764539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon electrodes
Assignee: BENJAMIN SACK
•
Filing: 1952-08-21
•
Granted: 1956-09-25
•
Expires: 1972-08-21
Abstract
No abstract record available.
Inventors
- 👤 Gerald J Horvitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/02; C25C7/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF MAKING A SELF-BAKING ELECTRODE IN A LONGITUDINAL METAL SHELL, WHICH CONSISTS IN FILLING SAID SHELL WITH A MIXED MASS, SAID MIXED MASS FILLING CONSISTING OF PRE-CALCINED BRIQUETTS AND CARBON FILLER AND UNCALCINED CARBONACEOUS BINDER, THE WEIGHT OF SAID BRIQUETTES BEING SUBSTANTIALLY 23 GRAMS TO 116 GRAMS, SAID BRIQUETTES BEING SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT SAID FILLING AND CONSISTING SUBSTANTIALLY WHOLLY OF ELEMENTAL CARBON AND HAVING A MINIMUM APPARENT SPECIFIC GRAVITY OF 1.34 AND MAXIMUM RESISTIVITY OF 0.00615 OHM CM.3, ENOUGH BRIQUETTES BEING INCLUDED IN SAID MIXED MASS FILLING TO SUBSTANTIALLY ABUT EACH OTHER SUBSTANTIALLY UNIFORMLY THROUGHOUT SAID MIXED MASS FILLING, INCLUDING THE FACE OF SAID MIXED MASS FILLING WHICH IS DIRECTLY ADJACENT THE INNER SURFACE OF SAID METAL SHELL, APPLYING HEAT TO SAID FILLING TO FORM A SELF-BAKED ELECTRODE IN SAID SHELL, THE SPACES BETWEEN SAID BRIQUETTES IN SAID MIXED MASS WITH SAID BINDER.
Claim 2
Independent Claim
146 words
A METHOD OF MAKING A SELF-BAKING ELECTRODE IN A LONGITUDINAL METAL SHELL, WHICH CONSISTS IN FILLING SAID SHELL WITH A MIXED MASS, SAID MIXED MASS FILLING CONSISTING OF PRE-CALCINED BRIQUETTS AND CARBON FILLER AND UNCALCINED CARBONACEOUS BINDER, THE WEIGHT OF SAID BRIQUETTES BEING SUBSTANTIALLY 23 GRAMS TO 116 GRAMS, SAID BRIQUETTES BEING SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT SAID FILLING AND CONSISTING SUBSTANTIALLY WHOLLY OF ELEMENTAL CARBON AND HAVING A MINIMUM APPARENT SPECIFIC GRAVITY OF 1.34 AND MAXIMUM RESISTIVITY OF 0.00615 OHM CM.3, ENOUGH BRIQUETTES BEING INCLUDED IN SAID MIXED MASS FILLING TO SUBSTANTIALLY ABUT EACH OTHER SUBSTANTIALLY UNIFORMLY THROUGHOUT SAID MIXED MASS FILLING, INCLUDING THE FACE OF SAID MIXED MASS FILLING WHICH IS DIRECTLY ADJACENT THE INNER SURFACE OF SAID METAL SHELL, APPLYING HEAT TO SAID FILLING TO FORM A SELF-BAKED ELECTRODE IN SAID SHELL, THE SPACES BETWEEN SAID BRIQUETTES IN SAID MIXED MASS WITH SAID BINDER.
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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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |