US2532295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal process for producing the carbides of tantalum and columbium
Assignee: Individual
•
Filing: 1946-09-14
•
Granted: 1950-12-05
•
Expires: 1966-09-14
Abstract
No abstract record available.
Inventors
- 👤 Gardner Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:51
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/5607; C01; C01B; C01B32/00; C01B32/90; C01G; C01G35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE PROCESS FOR PRODUCING THE CARBIDE OF A METAL OF THE METAL GROUP CONSISTING OF TANTALUM, COLUMBIUM AND MIXTURES THEREOF, FROM A STARTING MATERIAL WHICH CONTAINS AS A COMPOUND OF SUCH GROUP METAL A HALIDE OF THE HALDIE GROUP CONSISTING OF THE PENTACHLORIDE AND THE PENTAFLUORIDE OF SUCH METAL; COMPRISING REACTING THE SAME IN GASEOUS PHASE AT A TEMPERATURE OF THE ORDER OF ABOUT 600* TO 760*C., IN MIXTURE WITH A HYDROGENIFEROUS AGENT PROVIDING AT SUCH TEMPERATUE GASEOUS HYDROGEN TO COMBINE CHEMICALLY WITH AND REMOVE THE HALOGEN CONSTITUTENT OF SUCH HALIDE, AND A CARBONIFEROUS AGENT YIELDING AT SUCH TEMPERATURE FREED CARBON TO COMBINE CHEMICALLY WITH THE GROUP METAL CONSTITUENT OF SUCH HALIDE; AND SEPARATING THE RESULTING CARBIDE FROM THE BYPRODUCTS OF THE REACTION.
Claim 2
Dependent Claim
123 words
THE PROCESS FOR PRODUCING THE CARBIDE OF A METAL OF THE METAL GROUP CONSISTING OF TANTALUM, COLUMBIUM AND MIXTURES THEREOF, FROM A STARTING MATERIAL WHICH CONTAINS AS A COMPOUND OF SUCH GROUP METAL A HALIDE OF THE HALDIE GROUP CONSISTING OF THE PENTACHLORIDE AND THE PENTAFLUORIDE OF SUCH METAL; COMPRISING REACTING THE SAME IN GASEOUS PHASE AT A TEMPERATURE OF THE ORDER OF ABOUT 600* TO 760*C., IN MIXTURE WITH A HYDROGENIFEROUS AGENT PROVIDING AT SUCH TEMPERATUE GASEOUS HYDROGEN TO COMBINE CHEMICALLY WITH AND REMOVE THE HALOGEN CONSTITUTENT OF SUCH HALIDE, AND A CARBONIFEROUS AGENT YIELDING AT SUCH TEMPERATURE FREED CARBON TO COMBINE CHEMICALLY WITH THE GROUP METAL CONSTITUENT OF SUCH HALIDE; AND SEPARATING THE RESULTING CARBIDE FROM THE BYPRODUCTS OF THE REACTION.
References Cited (Backward Citations)
US2124509A
Cited
GB485021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |