Patent US3047477A successfully refreshed from Google Patents.
US3047477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of titanium dioxide
Assignee: General American Transportation Corp
•
Filing: 1957-10-30
•
Granted: 1962-07-31
•
Expires: 1977-10-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Spraul
- 👤 Batzer David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:15
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1263; C22B34/1281; C22B5/00; C25; C25C; C25C3/00; C25C3/26; C25C3/28; C25C5/00; C25C5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS OF REACTING IN THE SOLID STATE TITANIUM DIOXIDE AND THE CARBIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND ALKALINE EARTH METALS TO PRODUCE FREE TITANIUM METAL, COMPRISING PREPARING AN INTIMATE MIXTURE OF SAID INGREDIENTS IN FINELY DIVIDED FORM, AND HEATING SAID MIXTURE TO AN ELEVATED TEMPERATURE BELOW ABOUT 1200*C. THROUGHOUT A TIME INTERVAL SUFFICIENTLY LONG TO EFFECT A SUBSTANTIALLY COMPLETE REACTION TO PRODUCE PARTICLES OF FREE TITANIUM METAL AND OF CARBON AND OF THE OXIDE OF SAID CLASS METAL.
Claim 2
Dependent Claim
85 words
THE PROCESS OF REACTING IN THE SOLID STATE TITANIUM DIOXIDE AND THE CARBIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND ALKALINE EARTH METALS TO PRODUCE FREE TITANIUM METAL, COMPRISING PREPARING AN INTIMATE MIXTURE OF SAID INGREDIENTS IN FINELY DIVIDED FORM, AND HEATING SAID MIXTURE TO AN ELEVATED TEMPERATURE BELOW ABOUT 1200*C. THROUGHOUT A TIME INTERVAL SUFFICIENTLY LONG TO EFFECT A SUBSTANTIALLY COMPLETE REACTION TO PRODUCE PARTICLES OF FREE TITANIUM METAL AND OF CARBON AND OF THE OXIDE OF SAID CLASS METAL.
References Cited (Backward Citations)
CA475345A
Cited
US2205386A
Cited
US2486341A
Cited
US2537591A
Cited
US2707170A
Cited
FR1092006A
Cited
GB771139A
Cited
US2783192A
Cited
US2798844A
Cited
US2887443A
Cited
US3834667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |