US2798002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making fused magnesia
Assignee: —
•
Filing: —
•
Granted: 1957-07-02
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Expires: 1974-07-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:05
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/03; C04B35/04; C04B35/05; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3205; C04B2235/3206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
IN THE PROCESS OF MAKING ELECTRICAL PERICLASE AND THE LIKE AND INCREASING THE ELECTRICAL RESISTIVITY THEREOF BY THE FUSION OF A CHARGE OF MAGNESIA TO A MOLTEN STATE IN THE ELECTRIC FURNANCE HAVING GRAPHITE OR CARBON ELECTRODES, SAID CHARGE ANALYZING BY WEIGHT WITHIN THE FOLLOWING LIMITS:
Claim 2
Dependent Claim
46 words
IN THE PROCESS OF MAKING ELECTRICAL PERICLASE AND THE LIKE AND INCREASING THE ELECTRICAL RESISTIVITY THEREOF BY THE FUSION OF A CHARGE OF MAGNESIA TO A MOLTEN STATE IN THE ELECTRIC FURNANCE HAVING GRAPHITE OR CARBON ELECTRODES, SAID CHARGE ANALYZING BY WEIGHT WITHIN THE FOLLOWING LIMITS:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |