US2694646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zirconia compositions
Assignee: Zirconium Corp of America
•
Filing: 1949-07-19
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Granted: 1954-11-16
•
Expires: 1969-07-19
Abstract
No abstract record available.
Inventors
- 👤 Harold C Wagner
- 👤 Robert A Schoenlaub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:23
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A COMPOSITION OF MATTER FORMED OF A MIXTURE OF METAL OXIDES FIRED IN REDUCING CONDITIONS CONSISTING ESSENTIALLY OF OXIDE OF ZIRCONIUM 25-80 PERCENT, AND AT LEAST ONE OXIDE OF METAL IN THE ATOMIC NUMBER RANGE 24-29 OF BOILING POINT OVER 2000* C., SELECTED FROM THE MEMBERS CHROMIUM, IRON, NICKEL AND COPPER, OXIDE OF NICKEL BEING PRESENT IN EVERY CASE.
Claim 2
Dependent Claim
59 words
A COMPOSITION OF MATTER FORMED OF A MIXTURE OF METAL OXIDES FIRED IN REDUCING CONDITIONS CONSISTING ESSENTIALLY OF OXIDE OF ZIRCONIUM 25-80 PERCENT, AND AT LEAST ONE OXIDE OF METAL IN THE ATOMIC NUMBER RANGE 24-29 OF BOILING POINT OVER 2000* C., SELECTED FROM THE MEMBERS CHROMIUM, IRON, NICKEL AND COPPER, OXIDE OF NICKEL BEING PRESENT IN EVERY CASE.
References Cited (Backward Citations)
US1362317A
Cited
US2231944A
Cited
US2271368A
Cited
US2294756A
Cited
US2297546A
Cited
US2431660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |