US3565611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloys resistant to corrosion in caustic alkalies
Assignee: Huntington Alloys Corp
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Filing: 1968-04-12
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Granted: 1971-02-23
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Expires: 1988-04-12
Abstract
Abstract NICKEL-CHROMOUM AND NICKEL-CHROMIUM-IRON ALLOYS HAVING IMPROVED RESISTANCE IN THE STRESSED CONDITION TO STRESSCORROSION CRACKING IN CAUSTIC ALKALIES SUCH AS HOT CONCENTRATED SODIUM HYDROXIDE. THE PRESENCE OF FAIR AMOUNTS OF IRON CAN BE QUITE DETRIMENTAL, AN ADVERSE EFFECT WHICH IS GREATLY MINIMIZED BY OBSERVING SPECIAL CORRELATION BETWEEN IRON AND CHROMIUM, SIGNIFICANT PERCENTAGES OF THE LATTER BEING EXTREMELY BENEFICIAL.
Inventors
- 👤 George Economy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:11
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/053
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |