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US3115407A
Expired / Lapsed
US
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Multicomponent columbium alloys
Assignee: Stauffer Chemical Co
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Filing: 1960-12-06
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Granted: 1963-12-24
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Expires: 1980-12-06
Abstract
No abstract record available.
Inventors
- 👤 Jack K Y Hum
- 👤 Alfred L Donlevy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:38
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A COLUMBIUM ALLOY CONSISTING ESSENTIALLY OF, ON A WEIGHT BASIS, FROM 9 TO 11 PERCENT TUNGSTEN, FROM 5 TO 32 PERCENT TANTALUM, FROM 0.25 TO 1.0 PERCENT ZIRCONIUM, FROM 0.5 TO 2.0 PERCENT MOLYBDENUM, AND FROM 0.01 TO 0.3 PERCENT BORON, WITH THE BALANCE BEING COLUMBIUM.
Claim 2
Dependent Claim
46 words
A COLUMBIUM ALLOY CONSISTING ESSENTIALLY OF, ON A WEIGHT BASIS, FROM 9 TO 11 PERCENT TUNGSTEN, FROM 5 TO 32 PERCENT TANTALUM, FROM 0.25 TO 1.0 PERCENT ZIRCONIUM, FROM 0.5 TO 2.0 PERCENT MOLYBDENUM, AND FROM 0.01 TO 0.3 PERCENT BORON, WITH THE BALANCE BEING COLUMBIUM.
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |