US2980998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental prosthesis and method of manufacture
Assignee: Ney J M Co
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Filing: 1957-02-04
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Granted: 1961-04-25
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Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Richard L Coleman
- 👤 Paul S Cecil
- 👤 Julius A Kerpel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:08
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; A61C5/00; A61C5/20; A61C5/70; A61C5/77; A61K; A61K6/00; A61K6/80; A61K6/802; A61K6/816; A61K6/84; A61K6/844; C; C22; C22C; C22C5/00; C22C5/02; C23; C23D; C23D5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A DENTAL PROSTHETIC DEVICE COMPRISING A CASTING OF A GOLD ALLOY CONSISTING ESSENTIALLY OF 70 TO 90 PARTS GOLD, 3 TO 12 PARTS OF ONE OR MORE METALS SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM, 5 TO 10 PARTS COPPER, AND 0.5 TO 4 PARTS OF ONE OR MORE DEOXIDIZING METALS SELECTED FROM THE GROUP CONSISTING OF ZINC, INDIUM AND TIN, AND A PORCELAIN FACING FIRED ON AND DIRECTLY BONDED TO A SURFACE OF THE CASTING COMPRISING A FIRST LAYER CONSISTING ESSENTIALLY OF THE FOLLOWING COMPOSITION: AND A SECOND LAYER CONSISTING ESSENTIALLY OF THE FOLLOWING COMPOSITION:
Claim 2
Dependent Claim
98 words
A DENTAL PROSTHETIC DEVICE COMPRISING A CASTING OF A GOLD ALLOY CONSISTING ESSENTIALLY OF 70 TO 90 PARTS GOLD, 3 TO 12 PARTS OF ONE OR MORE METALS SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM, 5 TO 10 PARTS COPPER, AND 0.5 TO 4 PARTS OF ONE OR MORE DEOXIDIZING METALS SELECTED FROM THE GROUP CONSISTING OF ZINC, INDIUM AND TIN, AND A PORCELAIN FACING FIRED ON AND DIRECTLY BONDED TO A SURFACE OF THE CASTING COMPRISING A FIRST LAYER CONSISTING ESSENTIALLY OF THE FOLLOWING COMPOSITION: AND A SECOND LAYER CONSISTING ESSENTIALLY OF THE FOLLOWING COMPOSITION:
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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |