Patent US2428152A successfully refreshed from Google Patents.
Patent US2923754A successfully refreshed from Google Patents.
US2923754A
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Method and apparatus for manufacturing synthetic mica
Assignee: Synthetic Mica Corp
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Filing: 1956-08-02
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Granted: 1960-02-02
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Expires: 1976-08-02
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Worden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:11
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/04; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; H05; H05B; H05B3/00; H05B3/60; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A FURNACE FOR RESISTANCE MELTING A CHARGE OF POWDERED AND GRANULATED MATERIAL, COMPRISING A SHELL DEFINING A CHARGE RECEIVING CHAMBER, A PAIR OF SPACED MAIN ELECTRODES DISPOSED WITHIN SAID CHAMBER AND ADAPTED TO BE ELECTRICALLY ENERGIZED TO SUPPLY ELECTRIC ENERGY TO THE FURNACE CHARGE TO HEAT THE LATTER, AND A PAIR OF ANGULARLY RELATED SECONDARY ELECTRODES CONDUCTIVELY CONNECTED TO SAID MAIN ELECTRODES AND BEING IN MUTUAL CONDUCTING RELATIONSHIP.
Claim 2
Dependent Claim
68 words
A FURNACE FOR RESISTANCE MELTING A CHARGE OF POWDERED AND GRANULATED MATERIAL, COMPRISING A SHELL DEFINING A CHARGE RECEIVING CHAMBER, A PAIR OF SPACED MAIN ELECTRODES DISPOSED WITHIN SAID CHAMBER AND ADAPTED TO BE ELECTRICALLY ENERGIZED TO SUPPLY ELECTRIC ENERGY TO THE FURNACE CHARGE TO HEAT THE LATTER, AND A PAIR OF ANGULARLY RELATED SECONDARY ELECTRODES CONDUCTIVELY CONNECTED TO SAID MAIN ELECTRODES AND BEING IN MUTUAL CONDUCTING RELATIONSHIP.
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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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |