US2883282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of niobium from oxidation
Assignee: Horizons Inc
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Filing: 1957-05-21
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Granted: 1959-04-21
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Expires: 1977-05-21
Abstract
No abstract record available.
Inventors
- 👤 Wainer Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:43
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF PROTECTING NIOBIUM FROM DESTRUCTIVE OXIDATION WHICH COMPRISES: FORMING AN ALLOY CONSISTING ESSENTIALLY OF BETWEEN 0.5% AND 4% BY WEIGHT OF AT LEAST ONE ELEMENT FROM THE GROUP CONSISTING OF BERYLLIUM, TITANIUM, ALUMINUM, ZIRCONIUM, CHROMIUM, SILICON AND VANADIUM AND BETWEEN ABOUT 0.1% AND 0.5% BY WEIGHT OF AT LEAST ONE ELEMENT FROM THE GROUP CONSISTING OF CALCIUM, CERIUM, ERBIUM, LANTHANUM, NEODYMIUM, PRASEODYMIUM, LEAD, THORIUM, AND TIN; BALANCE SUBSTANTIALLY ALL NIOBIUM.
Claim 2
Independent Claim
72 words
THE METHOD OF PROTECTING NIOBIUM FROM DESTRUCTIVE OXIDATION WHICH COMPRISES: FORMING AN ALLOY CONSISTING ESSENTIALLY OF BETWEEN 0.5% AND 4% BY WEIGHT OF AT LEAST ONE ELEMENT FROM THE GROUP CONSISTING OF BERYLLIUM, TITANIUM, ALUMINUM, ZIRCONIUM, CHROMIUM, SILICON AND VANADIUM AND BETWEEN ABOUT 0.1% AND 0.5% BY WEIGHT OF AT LEAST ONE ELEMENT FROM THE GROUP CONSISTING OF CALCIUM, CERIUM, ERBIUM, LANTHANUM, NEODYMIUM, PRASEODYMIUM, LEAD, THORIUM, AND TIN; BALANCE SUBSTANTIALLY ALL NIOBIUM.
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |