US2897573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramoplastic and method of manufacturing same
Assignee: Mycalex Corp of America
•
Filing: 1957-07-19
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Granted: 1959-08-04
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Expires: 1977-07-19
Abstract
No abstract record available.
Inventors
- 👤 Philip S Hessinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:01
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/16; C04; C04B; C04B32/00; C04B32/005; Y; Y10; Y10S; Y10S106/00; Y10S106/03
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
A METHOD OF MAKING HOT PRESSED MATERIAL OF THE VITREO-CRYSTALLINE TYPE WHEREIN MICACEOUS CRYSTALS FORM A PART OF THE CRYSTALLINE PHASE, AND THE VITEROUS PHASE OF SAID MATERIAL AND ANOTHER PART OF THE CRYSTALLINE PHASE THEREOF ARE BOTH FORMED BY THE REACTION OF ALKALI SILICO FLUORIDE AND ALUMINA, COMPRISING THE STEPS OF MIXING ALKALI SILICO FLUORIDE, ALUMINA AND MICACEOUS MATERIAL, HEATING SAID MIXTURE TO A TEMPERATURE WHICH CAUSES THE ALKALI SILICO FLUORIDE AND THE ALUMINA TO REACT TO FORM A LIQUID, COMPRESSING SAID HEATED MIXTURE, AND COOLING SAID MIXTURE WHEREBY TO CAUSE SAID LIQUID TO FORM A MULTIPLICITY OF DISPERSED CRYSTALS FORMING THE OTHER PART OF THE CRYSTALLINE MATERIAL AND A GLASS ACTING AS A BINDER FOR SAID CYRSTALLINE PHASE.
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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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |