US3052983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porcelain covered metal-reinforced teeth
Assignee: Permadent Manuf Corp
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Filing: 1954-07-16
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Granted: 1962-09-11
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Expires: 1974-07-16
Abstract
No abstract record available.
Inventors
- 👤 Lenore K Weinstein
- 👤 Abraham B Weinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:45
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; A61C13/08; A61C13/09; A61C5/00; A61C5/70; A61C5/77; A61K; A61K6/00; A61K6/15; A61K6/16; A61K6/20; A61K6/80; A61K6/802; A61K6/807; A61K6/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE METHOD OF MANUFACTURING DENTAL CONSTRUCTIONS, EACH CONSISTING OF A PORCELAIN OUTER COVERING AND A METAL COR WHICH COMPRISES PREPARING A PERMANENT MOLD FOR FORMING STANDARDIZED PORCELAIN COVERINGS, EACH HAVING A UNIFORM OUTER SHAPE, INSERTING A METAL CORE THEREIN HAVING AN OUTER SURFACE GENERALLY CONFORMING TO THE DENTINE SURFACE OF THE STRUCTURE OF A NATURAL TOOTH OF THE SAME SIZE AND SHAPE AS THE COVERING, AND POSITIONED BENEATH AND SUBSTANTIALLY THROUGHOUT THE INNER SURFACE OF THE MOLD DEFINING THE OUTER COVERING; FILLING THE SPACE BETWEEN THE METAL CORE AND THE MOLD WITH A PORCELAIN MATERIAL HAVING SUBSTANTIALLY THE SAME COEFFICIENT OF EXPANSION AS THE METAL CORE, REMOVING THE PORCELAIN COVERED CORE AND HEATING THE SAME TO A TEMPERATURE SUFFICIENT TO FUSE THE PORCELAIN TO THE METAL.
Claim 2
Independent Claim
126 words
THE METHOD OF MANUFACTURING DENTAL CONSTRUCTIONS, EACH CONSISTING OF A PORCELAIN OUTER COVERING AND A METAL COR WHICH COMPRISES PREPARING A PERMANENT MOLD FOR FORMING STANDARDIZED PORCELAIN COVERINGS, EACH HAVING A UNIFORM OUTER SHAPE, INSERTING A METAL CORE THEREIN HAVING AN OUTER SURFACE GENERALLY CONFORMING TO THE DENTINE SURFACE OF THE STRUCTURE OF A NATURAL TOOTH OF THE SAME SIZE AND SHAPE AS THE COVERING, AND POSITIONED BENEATH AND SUBSTANTIALLY THROUGHOUT THE INNER SURFACE OF THE MOLD DEFINING THE OUTER COVERING; FILLING THE SPACE BETWEEN THE METAL CORE AND THE MOLD WITH A PORCELAIN MATERIAL HAVING SUBSTANTIALLY THE SAME COEFFICIENT OF EXPANSION AS THE METAL CORE, REMOVING THE PORCELAIN COVERED CORE AND HEATING THE SAME TO A TEMPERATURE SUFFICIENT TO FUSE THE PORCELAIN TO THE METAL.
References Cited (Backward Citations)
US1248242A
Cited
US1803680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |