US3579329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation resistant iron-chromium-aluminum alloys
Assignee: Toshiba Corp
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Filing: 1969-05-12
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Granted: 1971-05-18
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Expires: 1989-05-12
Abstract
Abstract HEAT RESISTANT AND OXIDATION RESISTANT IRON-CHROMIUMALUMIUNM ALLOYS CONSISTING OF 15 TO 30 PERCENT BY WEIGHT OF CHROMIUM, 3 TO 7 PERCENT BY WEIGHT OF ALUMINUM, 0.001 TO 0.5 PERCENT BY WEIGHT OF ONE OR MORE OF BERYLLIUM, MAGNESIUM AND BARIUM, REMAINDER IRON AND INCIDENTAL IMPURITIES.
Inventors
- 👤 Satoru Mito
- 👤 Mitsuo Kawai
- 👤 Hiroshi Yoshida
- 👤 Kenichiro Ando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:49
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |