US4108642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy for preparing dentures therefrom
Assignee: Apex Dental Lab Inc
•
Filing: 1977-05-11
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Granted: 1978-08-22
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Expires: 1997-05-11
Abstract
Abstract An alloy for dentures with procelain caps which forms a good bond comprising 15 to 30% chromium, 30 to 60% nickel, 15 to 30% cobalt, 1 to 5% iron, and 1 to 2% beryllium. Another dental alloy comprises by weight about 22.2% Cr, 9.7% Co, 29.4% Ni, 29.4% Fe, 4.85% Al and 4.85% Mo.
Inventors
- 👤 Vincent T. Chiaramonte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:25
CPC Classifications
C; C22; C22C; C22C19/00; A; A61; A61K; A61K6/00; A61K6/80; A61K6/84
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
The alloy comprising: 15 to 30% chromium, 30 to 60% nickel, 15 to 30% cobalt, 1 to 5% iron, and 1 to 2% beryllium.
Claim 2
Dependent Claim
24 words
The alloy comprising: 15 to 30% chromium, 30 to 60% nickel, 15 to 30% cobalt, 1 to 5% iron, and 1 to 2% beryllium.
Claim 3
Dependent Claim
24 words
The alloy comprising: 20 to 25% chromium, 40 to 55% nickel, 20 to 30% cobalt, 1 to 3% iron, and 1.5 to 1.8% berylllium.
Claim 4
Dependent Claim
24 words
The alloy comprising: 20 to 25% chromium, 40 to 55% nickel, 20 to 30% cobalt, 1 to 3% iron, and 1.5 to 1.8% berylllium.
Claim 5
Dependent Claim
19 words
The alloy in percent weight comprising about: 22.2% chromium, 9.7% cobalt, 29.4% nickel, 29.4% iron, 4.85% aluminum, 4.85% molybdenum.
Claim 6
Dependent Claim
19 words
The alloy in percent weight comprising about: 22.2% chromium, 9.7% cobalt, 29.4% nickel, 29.4% iron, 4.85% aluminum, 4.85% molybdenum.
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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) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |