US3011868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making synthetic mica
Assignee: Individual
•
Filing: 1959-09-15
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Granted: 1961-12-05
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Expires: 1979-09-15
Abstract
No abstract record available.
Inventors
- 👤 Robert E Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:23
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/38; C01B33/42; C01B33/425; C01B33/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A METHOD OF MAKING SYNTHETIC NON-HYDROXYL MICA, COMPRISING THE STEPS OF DISSOLVING NON-HYDROXYL MICA FORMING MATERIAL IN LEAD BORATE GLASS CONSISTING ESSENTIALLY OF 50% TO 92% LEAD OXIDE AND 50% TO 8% BORON TRIOXIDE HEATED TO A TEMPERATURE BETWEEN ABOUT 450*C. AND 1365* C. AND THEN COOLING THE RESULTING SOLUTION TO CAUSE SAID MICA TO PRECIPITATE OUT OF SOLUTION.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |