US3841868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel alloys
Assignee: Nobel Biocare AB
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Filing: 1972-12-22
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Granted: 1974-10-15
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Expires: 1992-12-22
Abstract
Abstract A corrosion resistant precision casting alloy particularly suitable for use as a dental alloy comprises essentially, by weight, 15.0 to 25.0 percent chromium, 3.0 to 6.0 percent molybdenum, 1.0 to 4.0 percent tin, 0.5 to 1.5 percent manganese, 0.5 to 5.0 percent copper, 1.0 to 4.0 percent silicon, up to 1.0 percent aluminum, up to 1.0 percent cobalt, up to 0.2 percent carbon and the balance nickel.
Inventors
- 👤 J Tesk
- 👤 R Dudek
- 👤 P Kosmos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:44
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055; A; A61; A61K; A61K6/00; A61K6/80; A61K6/84
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
13 words
A CORROSION RESISTANT, HOT WORKABLE HARDENABLE PRECISION CASTING ALLOY CONSISTING ESSENTIALLY, BY WEIGHT,
Claim 2
Dependent Claim
13 words
A CORROSION RESISTANT, HOT WORKABLE HARDENABLE PRECISION CASTING ALLOY CONSISTING ESSENTIALLY, BY WEIGHT,
Claim 3
Dependent Claim
10 words
The alloy according to claim 1 consisting essentially, by weight,
Claim 4
Dependent Claim
17 words
The alloy according to claim 2 in which the alloy also contains 1.0 percent by weight aluminum.
Claim 5
Dependent Claim
19 words
The alloy according to claim 2 in which the alloy also contains up to 1.0 percent by weight cobalt.
Claim 6
Dependent Claim
19 words
The alloy according to claim 2 in which the alloy also contains up to 0.2 percent by weight carbon.
References Cited (Backward Citations)
US2597495A
Cited
US2743176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |