Patent US3188205A successfully refreshed from Google Patents.
US3188205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Columbium alloy
Assignee: Fansteel Inc
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Filing: 1961-12-20
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Granted: 1965-06-08
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Expires: 1981-12-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:07
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A COLUMBIUM-TANTALUM BASE ALLOY HAVING HIGH RESISTANCE TO OXIDATION AND HIGH STRENGTH AT ELEVATED TEMPERATURES, CONSISTING ESSENTIALLY OF FROM ABOUT 20% TO ABOUT 35% TANTALUM, A MEMBER SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN AND MOLYBDENUM AND MIXTURES THEREOF, THE TUNGSTEN WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 5 TO ABOUT 16%, THE MOLYBDENUM WHEN SELECTED BEING IN THE RANGES OF FROM ABOUT 3% TO ABOUT 10%, THE MIXTURE WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 5% TO ABOUT 16% WITH UP TO ABOUT 10% MOLYBEDENUM, A MEMBER SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND TITANIUM AND MIXTURES THEREOF, THE ZIRCONIUM WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 0.3% TO ABOUT 5%, TITANIUM WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 0.2% TO ABOUT 2%, THE MIXTURES THEREOF WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 0.3% TO ABOUT 5% WITH UP TO ABOUT 2% TITANIUM, AND THE BALANCE BEING SUBSTANTIALLY ALL COLUMBIUM.
Claim 2
Dependent Claim
162 words
A COLUMBIUM-TANTALUM BASE ALLOY HAVING HIGH RESISTANCE TO OXIDATION AND HIGH STRENGTH AT ELEVATED TEMPERATURES, CONSISTING ESSENTIALLY OF FROM ABOUT 20% TO ABOUT 35% TANTALUM, A MEMBER SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN AND MOLYBDENUM AND MIXTURES THEREOF, THE TUNGSTEN WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 5 TO ABOUT 16%, THE MOLYBDENUM WHEN SELECTED BEING IN THE RANGES OF FROM ABOUT 3% TO ABOUT 10%, THE MIXTURE WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 5% TO ABOUT 16% WITH UP TO ABOUT 10% MOLYBEDENUM, A MEMBER SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND TITANIUM AND MIXTURES THEREOF, THE ZIRCONIUM WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 0.3% TO ABOUT 5%, TITANIUM WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 0.2% TO ABOUT 2%, THE MIXTURES THEREOF WHEN SELECTED BEING IN THE RANGE OF FROM ABOUT 0.3% TO ABOUT 5% WITH UP TO ABOUT 2% TITANIUM, AND THE BALANCE BEING SUBSTANTIALLY ALL COLUMBIUM.
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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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |