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Patent US4107348A successfully refreshed from Google Patents.
US4107348A
Expired / Lapsed
US
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Method of constructing porcelain-metal dental restorations
Assignee: Individual
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Filing: 1977-01-19
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Granted: 1978-08-15
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Expires: 1997-01-19
Abstract
Abstract An improved method of constructing porcelain-metal dental restorations characterized in a substantial reduction in the number of baking steps employed, thereby significantly improving the quality of the finished product by reducing the occurrence of "gassing" and reducing labor costs.
Inventors
- 👤 Leo Hirschhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/802; A61K6/20; A61K6/84
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
In the method of forming dental restorations including prosethetic teeth having a metallic base, there being at least one particulate opaque ceramic coating applied to said base, and at least one transluscent ceramic coating applied to said opaque coating, the improved step of applying said opaque coating in conjunction with a resinous binder in a volatile vehicle, which upon evaporation of said vehicle binds the particles of said opaque coating to said metallic base in the absence of a separate baking operation.
Claim 2
Dependent Claim
82 words
In the method of forming dental restorations including prosethetic teeth having a metallic base, there being at least one particulate opaque ceramic coating applied to said base, and at least one transluscent ceramic coating applied to said opaque coating, the improved step of applying said opaque coating in conjunction with a resinous binder in a volatile vehicle, which upon evaporation of said vehicle binds the particles of said opaque coating to said metallic base in the absence of a separate baking operation.
Claim 3
Dependent Claim
21 words
The step in accordance with claim 1, further characterized in the incorporation of said resinous binder directly into said volatile vehicle.
Claim 4
Dependent Claim
27 words
The step in accordance with claim 1, further characterized in the application of said binder to a previously applied opaque coating by means of an aerosol vehicle.
Claim 5
Dependent Claim
18 words
The step in accordance with claim 1, further characterized in said resin being a vinyl chloride resin dispersion.
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) | 1981-08-14 | 1982-02-13 | 1982-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-14 | 1986-02-13 | 1986-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-14 | 1990-02-13 | 1990-08-15 | $7700.00 | Window Closed / Lapsed |