US2724166A
Expired / Lapsed
US
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Methods of making dental restorations
Assignee: Myerson Tooth Corp
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Filing: 1952-12-02
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Granted: 1955-11-22
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Expires: 1972-12-02
Abstract
No abstract record available.
Inventors
- 👤 Richard L Myerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:52
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; A; A61; A61K; A61K6/00; A61K6/80; A61K6/802; A61K6/807; A61K6/816
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A PROCESS FOR PRODUCING DENTAL RESTORATIONS COMPRISING A CERAMIC PORTION, SAID PROCESS COMPRISING HEATING SAID CERAMIC PORTION AT LEAST UNTIL THE CERAMIC MATERIALS THEREOF HAVE FUSED SUFFICIENTLY TO FORM A CONTINUOUS SURFACE AND COOLING THE RESTORATION TO A TEMPERATURE AT WHICH THE FUSED CERAMIC MATERIALS ARE SOLIDIFIED, THE IMPROVEMENT COMPRISING MAINTAINING SAID CERAMIC PORTION, AT LEAST DURING AND IMMEDIATELY PRECEDING SAID SOLIDIFICATION, AT A PRESSURE WHICH IS SUPER-ATMOSPHERIC AND WHICH IS SUBSTANTIALLY GREATER THAN THE PRESSURE AT WHICH IT IS MAINTAINED IMMEDIATELY PRECEDING AND DURING THE FORMATION OF SAID CONTINUOUS FUSED SURFACE.
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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |