US2776887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of molybdenum
Assignee: Westinghouse Electric Corp
•
Filing: 1952-08-22
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Granted: 1957-01-08
•
Expires: 1972-08-22
Abstract
No abstract record available.
Inventors
- 👤 Jr John C R Kelly
- 👤 Alan G Caterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:11
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22; C; C22; C22B; C22B34/00; C22B34/30; C22B34/34; C22C; C22C1/00; C22C1/04; C22C1/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE PROCESS OF MANUFACTURING MOLYBDENUM METAL IN PURE DENSE COHERENT FORM, COMPRISING REDUCING AN OXYGEN-CONTAINING MOLYBDENUM COMPOUND TO METAL POWDER BY HEATING, ADDING TO THE MATERIAL, DURING SAID PROCESS, A WATER-SOLUBLE POLAR ORGANIC COMPOUND OF A REDUCING NATURE VOLATILIZABLE AT ABOUT 100*C. AND WHOSE COMPOSITION IS LIMITED TO CARBON, HYDROGEN AND OXYGEN, PRESSING TO SHAPE, AND SINTERING, FIRST IN HYDROGEN AND THEN IN A VACUUM, TO PRODUCE METAL THE PARTICLES OF WHICH ARE FREE FROM OXYGEN AND ANY MATERIAL PROPORTION OF CARBON AND AT LEAST 10% OF WHICH ARE OF 2 MICRONS OR LARGER IN SIZE.
Claim 2
Dependent Claim
96 words
THE PROCESS OF MANUFACTURING MOLYBDENUM METAL IN PURE DENSE COHERENT FORM, COMPRISING REDUCING AN OXYGEN-CONTAINING MOLYBDENUM COMPOUND TO METAL POWDER BY HEATING, ADDING TO THE MATERIAL, DURING SAID PROCESS, A WATER-SOLUBLE POLAR ORGANIC COMPOUND OF A REDUCING NATURE VOLATILIZABLE AT ABOUT 100*C. AND WHOSE COMPOSITION IS LIMITED TO CARBON, HYDROGEN AND OXYGEN, PRESSING TO SHAPE, AND SINTERING, FIRST IN HYDROGEN AND THEN IN A VACUUM, TO PRODUCE METAL THE PARTICLES OF WHICH ARE FREE FROM OXYGEN AND ANY MATERIAL PROPORTION OF CARBON AND AT LEAST 10% OF WHICH ARE OF 2 MICRONS OR LARGER IN SIZE.
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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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |