US2918367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium base alloy
Assignee: IIT Research Institute
•
Filing: 1954-10-27
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Granted: 1959-12-22
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Expires: 1974-10-27
Abstract
No abstract record available.
Inventors
- 👤 Frank A Crossley
- 👤 Harold D Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
C; C22; C22C; C22C14/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD OF PREPARING A STABLE ALLOY FOR HIGH TEMPERATURE USE THAT IS COMPOSED ESSENTIALLY OF 2% TO 8% OF ALUMINUM, 2% TO 6% OF A METAL FROM THE CLASS CONSISTING OF VANADIUM, MOLYBDENUM AND MIXTURES THEREOF, 0.1% TO 1.5% OF SILICON, BALANCE TITANIUM, WHEREIN THE ALUMINUM CONTENT IS AT LEAST AS GREAT AS THAT OF SAID METAL, WHICH COMPRISES THE STEPS OF HOLDING THE ALLOY AT AN ELEVATED TEMPERATURE IN THE POLYPHASE FIELD FOR A PEROID OF TIME SUFFICIENT TO COARSEN THE MICROSTRUCTURE FORMING A CONTINOUS ALPHA PHASE, QUICKLY COOLING THE COARSENED ALLOY, AND THEN AGING AT AN ELEVATED TEMPERATURE BELOW THE COARSENING TEMPERATURE UNTIL THE BETA PHASE BECOMES DARK ETCHING.
Claim 2
Independent Claim
112 words
A METHOD OF PREPARING A STABLE ALLOY FOR HIGH TEMPERATURE USE THAT IS COMPOSED ESSENTIALLY OF 2% TO 8% OF ALUMINUM, 2% TO 6% OF A METAL FROM THE CLASS CONSISTING OF VANADIUM, MOLYBDENUM AND MIXTURES THEREOF, 0.1% TO 1.5% OF SILICON, BALANCE TITANIUM, WHEREIN THE ALUMINUM CONTENT IS AT LEAST AS GREAT AS THAT OF SAID METAL, WHICH COMPRISES THE STEPS OF HOLDING THE ALLOY AT AN ELEVATED TEMPERATURE IN THE POLYPHASE FIELD FOR A PEROID OF TIME SUFFICIENT TO COARSEN THE MICROSTRUCTURE FORMING A CONTINOUS ALPHA PHASE, QUICKLY COOLING THE COARSENED ALLOY, AND THEN AGING AT AN ELEVATED TEMPERATURE BELOW THE COARSENING TEMPERATURE UNTIL THE BETA PHASE BECOMES DARK ETCHING.
References Cited (Backward Citations)
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US2857269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |