US3230119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating columbium-base alloy
Assignee: EIDP Inc
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Filing: 1963-09-17
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Granted: 1966-01-18
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Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Gordon D Gemmell
- 👤 James E Mcnutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:26
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/16; C22F1/18; C22C; C22C27/00; C22C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR IMPROVING THE TENSILE STRENGTH OF A COLUMBIUM-BASE ALLOY WHCIH COMPRISES SOLUTION HEAT TREATING A COLUMBIUM-BASE ALLOY CONSISTING ESSENTIALLY OF FROM ABOUT 0.5% TO 12% ZIRCONIUM BY WEIGHT AND FROM ABOUT 0.02% TO 0.5% BY WEIGHT OF AT LEAST ONE INTERSTITIAL ELEMENT SELECTED FROM THE GROUP CONSISTING OF OXYGEN, CARBON AND NITROGEN AT A TEMPERATURE RANGING FROM ABOUT 1600*C. TO 2100*C. FOR A TIME PERIOD OF FROM 5 MINUTES
Claim 2
Dependent Claim
71 words
A PROCESS FOR IMPROVING THE TENSILE STRENGTH OF A COLUMBIUM-BASE ALLOY WHCIH COMPRISES SOLUTION HEAT TREATING A COLUMBIUM-BASE ALLOY CONSISTING ESSENTIALLY OF FROM ABOUT 0.5% TO 12% ZIRCONIUM BY WEIGHT AND FROM ABOUT 0.02% TO 0.5% BY WEIGHT OF AT LEAST ONE INTERSTITIAL ELEMENT SELECTED FROM THE GROUP CONSISTING OF OXYGEN, CARBON AND NITROGEN AT A TEMPERATURE RANGING FROM ABOUT 1600*C. TO 2100*C. FOR A TIME PERIOD OF FROM 5 MINUTES
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |