US2904428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing titanium oxide
Assignee: Chicago Dev Corp
•
Filing: 1956-08-31
•
Granted: 1959-09-15
•
Expires: 1976-08-31
Abstract
No abstract record available.
Inventors
- 👤 Reginald S Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:18
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1263; C22B34/1268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
PROCESS OF CONVERTING TITANIUM DIOXIDE INTO A METALLIC TITANIUM PRODUCT, WHICH COMPRISES REACTING THE TITANIUM DIOXIDE, AT A TEMPERATURE OF THE ORDER OF 1000* C. AND IN AN INERT ATMOSPHERE, WITH SUBSTANTIALLY THE CHEMICAL EQUIVALENT OF AN ALKALINE EARTH METAL, IN THE PRESENCE OF A MOLTEN FLUXING AGENT SELECTED FROM THE GROUP CONSISTING OF NON-OXIDIZING ALKALI AND ALKALINE EARTH METAL CHLORIDES, THE AMOUNT OF FLUXING AGENT USED BEING WITHIN THE RANGE OF FROM ABOUT 5% TO ABOUT 25% BY WEIGHT OF THE TITANIUM PRESENT IN THE REACTION MIXTURE, THEREBY FORMING A REACTION PRODUCT COMPRISING PARTICULATE TITANIUM DISPERSED IN A SLAG AT LEAST PARTIALLY MOLTEN, AGGLOMERATING THE TITANIUM INOT PELLETS BY MECHANICALLY WORKING THE REACTION PRODUCT IN AN INERT ATMOSPHERE AND AT AN ELEVATED TEMPERATURE BY TUMBLING THE REACTION PRODUCT IN A CLOSED ROTATING VESSEL, AND THEREAFTER SEPARATING THE TITANIUM PELLETS FROM THE SLAG.
Claim 2
Dependent Claim
143 words
PROCESS OF CONVERTING TITANIUM DIOXIDE INTO A METALLIC TITANIUM PRODUCT, WHICH COMPRISES REACTING THE TITANIUM DIOXIDE, AT A TEMPERATURE OF THE ORDER OF 1000* C. AND IN AN INERT ATMOSPHERE, WITH SUBSTANTIALLY THE CHEMICAL EQUIVALENT OF AN ALKALINE EARTH METAL, IN THE PRESENCE OF A MOLTEN FLUXING AGENT SELECTED FROM THE GROUP CONSISTING OF NON-OXIDIZING ALKALI AND ALKALINE EARTH METAL CHLORIDES, THE AMOUNT OF FLUXING AGENT USED BEING WITHIN THE RANGE OF FROM ABOUT 5% TO ABOUT 25% BY WEIGHT OF THE TITANIUM PRESENT IN THE REACTION MIXTURE, THEREBY FORMING A REACTION PRODUCT COMPRISING PARTICULATE TITANIUM DISPERSED IN A SLAG AT LEAST PARTIALLY MOLTEN, AGGLOMERATING THE TITANIUM INOT PELLETS BY MECHANICALLY WORKING THE REACTION PRODUCT IN AN INERT ATMOSPHERE AND AT AN ELEVATED TEMPERATURE BY TUMBLING THE REACTION PRODUCT IN A CLOSED ROTATING VESSEL, AND THEREAFTER SEPARATING THE TITANIUM PELLETS FROM THE SLAG.
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |