Patent US3664765A successfully refreshed from Google Patents.
US3664765A
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Table ii
Assignee: AGC Inc
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Filing: 1970-03-09
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Granted: 1972-05-23
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Expires: 1990-03-09
Abstract
Abstract AN ALLOY COMPRISED MAINLY OF CHROMIUM, NICKEL AND COBALT AND EXCELLENT IN CORROSION- AND HEAT RESISTANCE, PARTICULARLY, AN ALLOY HAVING THE HIGH CORROSION RESISTANCE TO A HIGH TEMPERATURE COMBUSTION GAS CONTAINING SULFUR OXIDES AND ALKALI COMPOUNDS AND SUITABLE FOR A BLADE FOR A GAS TURBINE. THE SAID ALLOY IS PROVIDED WITH A CHROMIUM DIFFUSION LAYER ON ITS SURFACE BY A CHROMIZING TREATMENT.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:38
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/36; C23C10/38; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |