Patent US3308414A successfully refreshed from Google Patents.
US3308414A
Expired / Lapsed
US
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Porous-refractory encapsulant for cous and coil encapsulated therewith
Assignee: ANAMAG Inc A CORP OF DE
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Filing: 1964-01-14
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Granted: 1967-03-07
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Expires: 1984-01-14
Abstract
No abstract record available.
Inventors
- 👤 George W Ostrander
- 👤 Wesley W Pendleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:35
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/085; H01F; H01F5/00; H01F5/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071; Y10T29/49117; Y10T29/49124; Y10T29/49155; Y10T29/49162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
AN ELECTRICAL APPARATUS COMPRISING. (A) A PLURALITY OF TURNS OF WIRE COATED WITH INORGANIC, HIGH-TEMPERATURE INSULATION, AND (B) A POROUS REFRACTORY ENCAPSULANT SURROUNDING SAID TURNS, COMPRISING, BY WEIGHT, (A) 80-93 PARTS AL2O3, (B) 2-3,5 PARTS CR2O3, (C) 0-6 PARTS ZNO, AND (D) 3-10 PARTS SODIUM SILICATE.
Claim 2
Dependent Claim
46 words
AN ELECTRICAL APPARATUS COMPRISING. (A) A PLURALITY OF TURNS OF WIRE COATED WITH INORGANIC, HIGH-TEMPERATURE INSULATION, AND (B) A POROUS REFRACTORY ENCAPSULANT SURROUNDING SAID TURNS, COMPRISING, BY WEIGHT, (A) 80-93 PARTS AL2O3, (B) 2-3,5 PARTS CR2O3, (C) 0-6 PARTS ZNO, AND (D) 3-10 PARTS SODIUM SILICATE.
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |