US3109708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of titanium dioxide
Assignee: Laporte Titanium Ltd
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Filing: 1959-11-04
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Granted: 1963-11-05
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Expires: 1979-11-04
Abstract
No abstract record available.
Inventors
- 👤 Walmsley Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:05
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
A PROCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE BY THE OXIDATION OF A TITANIUM TETRAHALIDE IN THE VAPOUR PHASE BY CAUSING AN OXIDISING GAS TO REACT WITH THE TITANIUM TETRAHALIDE IN THE PRESENCE OF A FLUIDISED BED COMPRISING PARTICLES OF WHICH AT LEAST A PART OF THE SURFACE IS COMPOSED OF TITANIUM DIOXIDE AND WHICH ARE AT A TEMPERATURE WITHIN THE RANGE OF FROM 800*C. TO 1,500* C., WHEREIN THE TITANIUM TETRAHALIDE AND CARBON MONOXIDE ARE INTRODUCED SEPARATELY INTO THE FLUIDISED BED, OXIDISING GAS IS INTRODUCIED INTO THE FLUIDISED BED SEPARATELY FROM THE CARBON MONOXIDE AND IN A QUANTITY SUFFICIENT TO REACT WITH THE WHOLE OF BOTH THE TITANIUM TETRAHALIDE AND THE CARBON MONOXIDE, THE CONCENTRATION OF CARBON MONOXIDE IN THE REGION OF INTRODUCTION OF THE CARBON MONOXIDE INTO THE FLUIDISED BED IS REDUCED BY INCORPORATING WITH THE CARBON MONOXIDE A DILUENT GAS SELECTED FROM THE GROUP CONSISTING OF NITROGEN, CHLORINE, CARBON DIOXIDE AND A MIXTURE OF MORE THAN ONE OF THESE GASES, AND THE QUANTITIES OF CARBON MONOXIDE AND THE SAID DILUENT GAS ARE SUCH THAT THE PORPORTION OF DILUENT GAS BY VOLUME AND BASED ON THE TOTAL VOLUME OF CARBON MONOXIDE AND THE SAID DILUENT GAS LIES WITHIN THE RANGE OF FROM 11% TO 65%.
Claim 2
Dependent Claim
207 words
A PROCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE BY THE OXIDATION OF A TITANIUM TETRAHALIDE IN THE VAPOUR PHASE BY CAUSING AN OXIDISING GAS TO REACT WITH THE TITANIUM TETRAHALIDE IN THE PRESENCE OF A FLUIDISED BED COMPRISING PARTICLES OF WHICH AT LEAST A PART OF THE SURFACE IS COMPOSED OF TITANIUM DIOXIDE AND WHICH ARE AT A TEMPERATURE WITHIN THE RANGE OF FROM 800*C. TO 1,500* C., WHEREIN THE TITANIUM TETRAHALIDE AND CARBON MONOXIDE ARE INTRODUCED SEPARATELY INTO THE FLUIDISED BED, OXIDISING GAS IS INTRODUCIED INTO THE FLUIDISED BED SEPARATELY FROM THE CARBON MONOXIDE AND IN A QUANTITY SUFFICIENT TO REACT WITH THE WHOLE OF BOTH THE TITANIUM TETRAHALIDE AND THE CARBON MONOXIDE, THE CONCENTRATION OF CARBON MONOXIDE IN THE REGION OF INTRODUCTION OF THE CARBON MONOXIDE INTO THE FLUIDISED BED IS REDUCED BY INCORPORATING WITH THE CARBON MONOXIDE A DILUENT GAS SELECTED FROM THE GROUP CONSISTING OF NITROGEN, CHLORINE, CARBON DIOXIDE AND A MIXTURE OF MORE THAN ONE OF THESE GASES, AND THE QUANTITIES OF CARBON MONOXIDE AND THE SAID DILUENT GAS ARE SUCH THAT THE PORPORTION OF DILUENT GAS BY VOLUME AND BASED ON THE TOTAL VOLUME OF CARBON MONOXIDE AND THE SAID DILUENT GAS LIES WITHIN THE RANGE OF FROM 11% TO 65%.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |