US3666540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noble metal alloys
Assignee: Ney J M Co
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Filing: 1967-07-26
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Granted: 1972-05-30
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Expires: 1987-07-26
Abstract
Abstract NOVEL GOLD ALLOYS HAVING DESIRABLE PROPERTIES OF HARDNESS AND SOLIDUS TEMPERATURE ARE PROVIDED WHICH COMPRISE ABOUT 67.0 TO 87.0 PERCENT GOLD, ABOUT 7.0 TO 15.0 PERCENT PALLADIUM, ABOUT 2.0 TO 10.0 PERCENT PLATINUM, ABOUT 0.5 TO 1.0 PERCENT OF IRON AND ABOUT 0.5 TO 2.0 PERCENT TIN, ALL BASED UPON THE TOTAL WEIGHT OF THE ALLOY. OPTIONAL ALLOYING ELEMENTS INCLUDE UP TO ABOUT 2.0 PERCENT SILVER, 1.5 PERCENT ZINC, 1.0 PERCENT INDIUM AND 1.0 PERCENT RHENIUM.
Inventors
- 👤 Arthur Peter Burnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:01
CPC Classifications
C; C22; C22C; C22C5/00; C22C5/02; A; A61; A61K; A61K6/00; A61K6/80; A61K6/802; A61K6/84; A61K6/844
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |