Patent US4386710A successfully refreshed from Google Patents.
Patent US2936217A successfully refreshed from Google Patents.
US2936217A
Expired / Lapsed
US
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Method for chlorinating titanium oxide material
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-09-08
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Granted: 1960-05-10
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Expires: 1974-09-08
Abstract
No abstract record available.
Inventors
- 👤 John W Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:33
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/08; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1222; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A METHOD FOR CONTINOUS, STEADY-STATE PRODUCTION OF TITANIUM TETRACHLORIDE BY THE CHLORINATION OF SOLID BONDED AGGIOMERATES OF: DIVIDED TITANIUM OXIDE-BEARING MATERIAL OF WHICH AT LEAST 80% WILL PASS A 200-MESH SCEEN, AND FINALY DIVIDED SOLID CARBONACEOUS REDUCING AGENT OF WHICH AL LEAST 80% WILL PASS A 140-MESH SCREEN, THE AMOUNT OF CARBONACEOUS REDUCING AGENT IN SAID CONVERT GLOMERATES BEING STOICHOMETRICALLY SUFFICENT TO CONVERT ALL OF THE OXYGEN IN SAID TITANIUM OXIDE-BEARING MATERIAL TO THE CARBON MONOXIDE/CARBON DIOXIDE MIXTURE PRODUCED UNDER THE EXISTING CHLORINATION CONDITIONS, SAID FINELY DIVIDED TITANIUM OXIDE-BEARING MATERIAL AND SAID FINELY DIVIDED CARBONACEOUS REDUCING AGENT BONDED TOGETHER WITH AN INORGANIC CHEMICAL BINDER OF SUFFICENT STRENGTH TO PREVENT SUBSTANTIAL PHYSICAL DEGRADATION OF THE AGGLOMERATES DURING CHLORINATION THEROF, SAID AGGLOMERATES HAVING PARTICLE SIZES BETWEEN 8 AND 200 MESH AND, IN ADDITION TO ALL OF THE FOREGOING REQUIREMENTS, HAVING A CHLORINE REACTIVELY, A60, BETWEEN ABOUT 45% AND ABOUT 95%, WHICH METHOD COMPRISES CONTINUOUSLY CONTACTING GASEOUS CHLORINE AND THE AFORESAID AGGLOMERATES IN A FLUIDIZED BED REACTION ZONE MAINTAINED AT A TEMPERATURE BETWEEN ABOUT
Claim 2
Independent Claim
171 words
A METHOD FOR CONTINOUS, STEADY-STATE PRODUCTION OF TITANIUM TETRACHLORIDE BY THE CHLORINATION OF SOLID BONDED AGGIOMERATES OF: DIVIDED TITANIUM OXIDE-BEARING MATERIAL OF WHICH AT LEAST 80% WILL PASS A 200-MESH SCEEN, AND FINALY DIVIDED SOLID CARBONACEOUS REDUCING AGENT OF WHICH AL LEAST 80% WILL PASS A 140-MESH SCREEN, THE AMOUNT OF CARBONACEOUS REDUCING AGENT IN SAID CONVERT GLOMERATES BEING STOICHOMETRICALLY SUFFICENT TO CONVERT ALL OF THE OXYGEN IN SAID TITANIUM OXIDE-BEARING MATERIAL TO THE CARBON MONOXIDE/CARBON DIOXIDE MIXTURE PRODUCED UNDER THE EXISTING CHLORINATION CONDITIONS, SAID FINELY DIVIDED TITANIUM OXIDE-BEARING MATERIAL AND SAID FINELY DIVIDED CARBONACEOUS REDUCING AGENT BONDED TOGETHER WITH AN INORGANIC CHEMICAL BINDER OF SUFFICENT STRENGTH TO PREVENT SUBSTANTIAL PHYSICAL DEGRADATION OF THE AGGLOMERATES DURING CHLORINATION THEROF, SAID AGGLOMERATES HAVING PARTICLE SIZES BETWEEN 8 AND 200 MESH AND, IN ADDITION TO ALL OF THE FOREGOING REQUIREMENTS, HAVING A CHLORINE REACTIVELY, A60, BETWEEN ABOUT 45% AND ABOUT 95%, WHICH METHOD COMPRISES CONTINUOUSLY CONTACTING GASEOUS CHLORINE AND THE AFORESAID AGGLOMERATES IN A FLUIDIZED BED REACTION ZONE MAINTAINED AT A TEMPERATURE BETWEEN ABOUT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |