US4114272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of dental prostheses
Assignee: Individual
•
Filing: 1976-05-05
•
Granted: 1978-09-19
•
Expires: 1996-05-05
Abstract
Abstract Process for the manufacture of dental prostheses comprising a metallic substructure made from a nickel based alloy and coating portions made from ceramic or plastic material, wherein the substructure surfaces to receive the coating portions are metallized.
Inventors
- 👤 Albert Saragossi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:39
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/84; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12944
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
133 words
A process for the manufacture of dental prosthesis comprising a metallic alloy substructure consisting of by weight 87.5% nickel, 5% chromium, 1.25% boron, 4% silicon, 2% iron and 0.25% carabon and various layers of dental ceramic, said process comprising (a) preheating said metallic alloy substructure with a flame to a temperature of 900° C.-1200° C., (b) projecting a metal alloy powder having a particle size of 50 microns and consisting of 50.8% cobalt, 17.0% nickel, 19% chromium, 0.8% boron, 8.0% silicon, 4.0% tungsten and 0.4% carbon by weight through said flame and onto said preheated metallic alloy substructure, (c) terminating the projecting step when a coating having a maximum thickness of about 1/10th of a millimeter has been deposited on said substrate, and then applying to said coating various layers of dental ceramic.
Claim 2
Dependent Claim
133 words
A process for the manufacture of dental prosthesis comprising a metallic alloy substructure consisting of by weight 87.5% nickel, 5% chromium, 1.25% boron, 4% silicon, 2% iron and 0.25% carabon and various layers of dental ceramic, said process comprising (a) preheating said metallic alloy substructure with a flame to a temperature of 900° C.-1200° C., (b) projecting a metal alloy powder having a particle size of 50 microns and consisting of 50.8% cobalt, 17.0% nickel, 19% chromium, 0.8% boron, 8.0% silicon, 4.0% tungsten and 0.4% carbon by weight through said flame and onto said preheated metallic alloy substructure, (c) terminating the projecting step when a coating having a maximum thickness of about 1/10th of a millimeter has been deposited on said substrate, and then applying to said coating various layers of dental ceramic.
Claim 3
Dependent Claim
11 words
A dental prosthesis obtained by the process according to claim 1.
References Cited (Backward Citations)
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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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |