US3746536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing alloy
Assignee: Toshiba Corp
•
Filing: 1971-08-04
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Granted: 1973-07-17
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Expires: 1991-08-04
Abstract
Abstract A SEALING ALLOY COMPRISING 15-30% BY WEIGHT OF CR, 0.001-2.0% BY WEIGHT OF A RARE EARTH METAL AND BALANCE OF FE IS PROVIDED. THIS ALLOY HAS EXCELLENT CORROSION RESISTANCE.
Inventors
- 👤 T Kuse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:53
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/02; C22; C22C; C22C38/00; C22C38/18; C22C38/40
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |