US2628926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of machinable molybdenum
Assignee: Westinghouse Electric Corp
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Filing: 1949-06-21
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Granted: 1953-02-17
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Expires: 1969-06-21
Abstract
No abstract record available.
Inventors
- 👤 The Bloomfield Bank And Tru Co
- 👤 Robert D Malin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:31
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF PRODUCING MOLYBDENUM COMPRISING ROLLING AND SWAGING A BAR THEREOF, SINTERED FROM THE POWDER, AT TEMPERATURES BETWEEN ABOUT 1350* C. AND 1500* C., TO REDUCE IT NOT MORE THAN ABOUT 79% IN SECTION AND ELONGATE ITS GRAINS TO PRODUCE A FIBROUS STRUCTURE, RECRYSTALLIZING SAID BAR BY HEATING AT ABOUT 1600* C., AND FINALLY WORKING TO REDUCE THE TRANSVERSE SECTIONAL AREA OF SAID BAR ABOUT THE NOT MORE THAN 25%, THEREBY ELONGATING THE GRAINS, ON THE AVERAGE, TO BETWEEN TWO AND SIX TIMES THEIR TRANSVERSE DIMENSIONS, BY SAID WORKING, IN ORDER TO MAKE THE MATERIAL EASILY MACHINEABLE.
Claim 2
Independent Claim
68 words
THE METHOD OF PRODUCING EASILY MACHINEABLE MOLYBDENUM COMPRISING WORKING, TO FINISHED SIZE A BAR SINTERED FROM THE POWDER TO ELONGATE ITS GRAINS TO MORE THAN SIX TIMES THEIR TRANSVERSE DIMENSIONS TO A FIBROUS CONDITION, AND CONCLUDING THE TREATMENT BY ANNEALING FOR APPROXIMATELY ONE HOUR PER 1/4" OF SECTION THICKNESS AT A TEMPERATURE BETWEEN 1300* C. AND 1350* C., IN ORDER TO EFFECT A FORMATION OF THE PREFERRED RECRYSTALLI-
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) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |