US3573897A
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US
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Iron-nickel alloys having a high nickel content
Assignee: SOC DES FORGES ET ATELIERS DU CREUSOT
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Filing: 1969-12-16
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Granted: 1971-04-06
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Expires: 1989-12-16
Abstract
Abstract THE WELDABILITY OF IRON-NICKEL ALLOYS WITH A NICKEL CONTENT HIGHER THAN 30% IN WEIGHT IS IMPROVED BY INTRODUCING INTO THE ALLOY AN ADDITION OF AT LEAST ONE OF THE ELEMENTS VANADIUM, TITANIUM, ZIRCONIUM AND NIOBIUM. THESE ELEMENTS FORM NITRIDES WITH THE NITROGEN PRESENT IN THE ALLOY.
Inventors
- 👤 Xavier Wache
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:14
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C19/00; C22C38/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |