Patent US2669764A successfully refreshed from Google Patents.
US2669764A
Expired / Lapsed
US
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Manufacture of micaceous insulating materials
Assignee: MYCALEX Co Ltd
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Filing: 1950-05-01
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Granted: 1954-02-23
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Expires: 1970-05-01
Abstract
No abstract record available.
Inventors
- 👤 James S Kilpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:15
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/04; C; C03; C03C; C03C14/00; C03C14/004; C03C2214/00; C03C2214/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF MANUFACTURING A MICACEOUS INSULATING MATERIAL CHARACTERIZED BY ITS INJECTION MOULDING PROPERTIES COMPRISING IN MIXTURE A WHITE GLASS FRIT WITH BARIUM CARBONATE AND PHLOGOPITE MICA, IN FORMING THE MIXTURE INTO BILLETS OR BLOCKS, IN SUBJECTING THE BILLETS OR BLOCKS TO A RISE IN TEMPERATURE IN A FURNACE AND IN MOULDING AND COOLING THE HEAT TREATED MATERIAL SAID FRIT BARIUM CARBONATE AND MICA BEING EACH EMPLOYED ON THE PROPORTION OF SUBSTANTIALLY ONE-THIRD BY WEIGHT.
Claim 2
Independent Claim
75 words
THE METHOD OF MANUFACTURING A MICACEOUS INSULATING MATERIAL CHARACTERIZED BY ITS INJECTION MOULDING PROPERTIES COMPRISING IN MIXTURE A WHITE GLASS FRIT WITH BARIUM CARBONATE AND PHLOGOPITE MICA, IN FORMING THE MIXTURE INTO BILLETS OR BLOCKS, IN SUBJECTING THE BILLETS OR BLOCKS TO A RISE IN TEMPERATURE IN A FURNACE AND IN MOULDING AND COOLING THE HEAT TREATED MATERIAL SAID FRIT BARIUM CARBONATE AND MICA BEING EACH EMPLOYED ON THE PROPORTION OF SUBSTANTIALLY ONE-THIRD BY WEIGHT.
References Cited (Backward Citations)
US2032239A
Cited
US2303244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |