US3357794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for continuously producing titanium dioxide by the oxidation of vaporized titanium tetrachloride
Assignee: Fabriques de Produits Chimiques de Thann et de Mulhouse
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Filing: 1962-07-25
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Granted: 1967-12-12
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Expires: 1982-07-25
Abstract
No abstract record available.
Inventors
- 👤 Robert J Mas
- 👤 Andre L Michaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:57
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; C01G23/075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN THE PRODUCTION OF TITANIUM DIOXIDE BY BY REACTION OF VAPORIZED TITANIUM TETRACHLORIDE WITH OXYGEN IN A FURNACE CHAMBER, WHEREBY A HOT SUSPENSION OF TIO2 IN CHLORINE CONTAINING BURNED GASES IS FORMED CONTINUOUSLY IN SAID CHAMBER, THE PROCESS WHICH COMPRISES CONTINUOUSLY EVACUATING SAID SUSPENSION AS IT IS FORMED FROM A CENTRAL ZONE OF SAID CHAMBER REMOTE FROM THE HOT WALLS THEREOF AND NEAR THE END OF THE ZONE OF SAID REACTION AND CONTINOUSLY COOLING THE SURFACES WITHIN SAID CHAMBER BY WHICH THE SUSPENSION IS EVACUATED TO KEEP THE SAME AT A TEMPERATURE AT WHICH CRUSTS OF THE TIO2 WILL NOT ACCUMULATE THEREON.
Claim 2
Dependent Claim
102 words
IN THE PRODUCTION OF TITANIUM DIOXIDE BY BY REACTION OF VAPORIZED TITANIUM TETRACHLORIDE WITH OXYGEN IN A FURNACE CHAMBER, WHEREBY A HOT SUSPENSION OF TIO2 IN CHLORINE CONTAINING BURNED GASES IS FORMED CONTINUOUSLY IN SAID CHAMBER, THE PROCESS WHICH COMPRISES CONTINUOUSLY EVACUATING SAID SUSPENSION AS IT IS FORMED FROM A CENTRAL ZONE OF SAID CHAMBER REMOTE FROM THE HOT WALLS THEREOF AND NEAR THE END OF THE ZONE OF SAID REACTION AND CONTINOUSLY COOLING THE SURFACES WITHIN SAID CHAMBER BY WHICH THE SUSPENSION IS EVACUATED TO KEEP THE SAME AT A TEMPERATURE AT WHICH CRUSTS OF THE TIO2 WILL NOT ACCUMULATE THEREON.
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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |