Patent US3727299A successfully refreshed from Google Patents.
US3727299A
Expired / Lapsed
US
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Method for making a dental appliance
Assignee: Fried Krupp AG
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Filing: 1971-05-26
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Granted: 1973-04-17
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Expires: 1991-05-26
Abstract
Abstract An alloy consisting essentially of 8 to 16 weight-percent chromium, 5 to 15 weight-percent nickel, 1 to 10 weight-percent titanium, remainder cobalt, as a material that can be bonded to ceramic masses by burning, whereby an integrally assembled alloyporcelain dental applicance is formed for making non-removable dental prostheses.
Inventors
- 👤 A Hoffmann
- 👤 E Surbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:42
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; A61K; A61K6/00; A61K6/80; A61K6/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
The method as claimed in claim 1, wherein said alloy contains up to 3 weight-percent molybdenum, up to 2 weight-percent tungsten, up to 1 weight-percent manganese, and up to 0.1 weight-percent carbon.
Claim 2
Independent Claim
64 words
The method of using an alloy consisting essentially of 8 to 16 weight-percent chromium, 5 to 15 weight-percent nickel, 1 to 10 weight-percent titanium, up to 3 weight-percent molybdenum, up to 2 weight-percent tungsten, up to 1 weight-percent manganese, up to 0.1 weight-percent carbon, remainder cobalt, comprising bonding a body of such an alloy to ceramic masses by burning for making non-removable dental prostheses.
References Cited (Backward Citations)
US2071196A
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US2206502A
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US2631095A
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US2617725A
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US2829048A
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US3334399A
Cited
US3514849A
Cited
US3544315A
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |