US2601023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of tungsten carbide
Assignee: General Electric Co
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Filing: 1950-06-06
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Granted: 1952-06-17
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Expires: 1970-06-06
Abstract
No abstract record available.
Inventors
- 👤 Dallas T Hurd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:16
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/949; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
THE PROCESS OF PREPARING TUNGSTEN CARBIDE OF A PARTICLE SIZE FROM 1/2 TO 20 MICRONS WHICH COMPRISES INTRODUCING INTO A HEATED ZONE AT A TEMPERATURE OF 650 TO 1100* C., SOLID PARTICLES OF TUNGSTEN CARBONYL OF A PARTICLE SIZE ABOUT FIVE TIMES THAT DESIRED FOR THE TUNGSTEN CARBIDE PRODUCT AND SUBJECTING THE RESULTANT PYROLYSIS PRODUCTS AT A TEMPERATURE OF 1000* C., TO A GASEOUS ATMOSPHERE CONSISTING OF ABOUT FOUR PARTS CARBON MONOXIDE AND ONE PART CARBON DIOXIDE CAPABLE OF CONVERTING ALL OF THE METAL COMPONENTS THEREOF TO TUNGSTEN CARBIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |