US3276903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treatment of metals
Assignee: Office National d'Études et de Recherches Aérospatiales
•
Filing: 1965-03-10
•
Granted: 1966-10-04
•
Expires: 1985-03-10
Abstract
No abstract record available.
Inventors
- 👤 Galmiche Philippe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:39
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C22; C22F; C22F1/00; C22F1/02; C22F1/10; C23C16/00; C23C16/06; C23C16/08; F; F24; F24S; F24S70/00; F24S70/10; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD WHICH COMPRISES HEATING, FOR A TIME RANGING FROM A FIVE MINUTES TO FIVE HOURS, IN A CLOSED VESSEL, AT A TEMPERATURE BETWEEN 700*C. AND 1100*C., A SOLID BODY OF AN ALLOY OF THE GROUP CONSISTING OF CHROMIUMNICKEL STAINLESS STEELS, OF NICKEL BASE CHROMIUM CONTAINING HEAT RESISTING ALLOYS, AND OF COBALT BASE CHROMIUM CONTAINING HEAT RESISTING ALLOYS, IN THE PRESENCE OF HYDROGEN AND VAPORS OF A FLUORIDE OF THE GROUP CONSISTING OF NICKEL FLUORIDE AND COBALT FLUORIDE, SAID FLUORIDE BEING NICKEL FLUORIDE WHEN SAID SOLID BODY CONTAINS NICKEL AND COBALT FLUORIDE WHEN SAID SOLID CONTAINS COBALT.
Claim 2
Independent Claim
97 words
THE METHOD WHICH COMPRISES HEATING, FOR A TIME RANGING FROM A FIVE MINUTES TO FIVE HOURS, IN A CLOSED VESSEL, AT A TEMPERATURE BETWEEN 700*C. AND 1100*C., A SOLID BODY OF AN ALLOY OF THE GROUP CONSISTING OF CHROMIUMNICKEL STAINLESS STEELS, OF NICKEL BASE CHROMIUM CONTAINING HEAT RESISTING ALLOYS, AND OF COBALT BASE CHROMIUM CONTAINING HEAT RESISTING ALLOYS, IN THE PRESENCE OF HYDROGEN AND VAPORS OF A FLUORIDE OF THE GROUP CONSISTING OF NICKEL FLUORIDE AND COBALT FLUORIDE, SAID FLUORIDE BEING NICKEL FLUORIDE WHEN SAID SOLID BODY CONTAINS NICKEL AND COBALT FLUORIDE WHEN SAID SOLID CONTAINS COBALT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |