USRE25864E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metal oxides
Assignee: —
•
Filing: —
•
Granted: 1965-09-21
•
Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:15
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/26; B01J4/00; B01J4/001; B01J4/002; B01J8/00; B01J8/18; B01J8/1818; B01J8/1827; B01J8/24; B01J8/44; B82; B82Y; B82Y30/00; C; C01; C01B; C01B13/00; C01B13/14; C01B13/20; C01B13/22; C01B13/26; C01B33/00; C01B33/113; C01B33/12; C01B33/18; C01B33/181; C01B33/183; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00477; B01J2208/00495; C01P; C01P2004/00; C01P2004/51; C01P2004/52; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/12; C01P2006/60; C01P2006/90
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
207 words
APPARATUS FOR PRODUCING A METAL OXIDE, COMPRISING A SHAFT FURNACE, A HEAT-INSULATING BASE FOR SUPPORTING A BED OF INERT SOLID MATERIAL PARTICLES TO BE FLUIDIZED, A PLURALITY OF GAS PASSAGEWAYS THROUGH THE BASE DISTRIBUTED OVER THE CROSS SECTIONAL AREA THEREOF, CONSTRUCTIONS IN SAID PASSAGEWAYS IN THEIR LOWER PART, MEANS SERVING TO MAKE A COMMON SUPPLY OF OXYGEN AVAILABLE TO A FIRST SET COMPRISING A PLURALITY OF THE PASSAGEWAYS THROUGH THE CONSTRICTIONS THEREIN, MEANS SERVING TO MAKE A COMMON SUPPLY OF (METAL HALIDE) CHLORIDE VAPOR OF A METAL OF THE GROUP CONSISTING OF TITANIUM, SILICON AND ALUMINIUM AVAILABLE TO A SECOND SET COMPRISING A PLURALITY OF PASSAGEWAYS THROUGH THE CONSTRICTIONS THEREIN, THE SETS OF PASSAGEWAYS BEING RELATIVELY DISPERSED WITH FIRST SET PASSAGEWAYS BEING LOCATED BOTH INWARDLY OF AND OUTWARDLY OF SECOND SET PASSAGEWAYS RADIALLY WITH RESPECT TO THE SHAFT FURNACE TO ENSURE THAT THE OXYGEN AND METAL (HALIDE) CHLORIDE VAPOR WILL INTERMINGLE IN THE FLUIDIZED BED, AND MEANS FOR MAINTAINING THE DEPTH OF THE BED OF INERT SOLID MATERIAL PARTICLES TO BE FLUIDIZED LOW ENOUGH SO THAT THE PRESSURE DROP OF THE METAL (HALIDE) CHLORIDE AND OXYGEN STREAMS AS THEY PASS THROUGH SAID CONSTRICTIONS AND INTO THE BED IS AT LEAST ONE-HALF THE PRESSURE DROP ACROSS THE BED.
Claim 2
Dependent Claim
207 words
APPARATUS FOR PRODUCING A METAL OXIDE, COMPRISING A SHAFT FURNACE, A HEAT-INSULATING BASE FOR SUPPORTING A BED OF INERT SOLID MATERIAL PARTICLES TO BE FLUIDIZED, A PLURALITY OF GAS PASSAGEWAYS THROUGH THE BASE DISTRIBUTED OVER THE CROSS SECTIONAL AREA THEREOF, CONSTRUCTIONS IN SAID PASSAGEWAYS IN THEIR LOWER PART, MEANS SERVING TO MAKE A COMMON SUPPLY OF OXYGEN AVAILABLE TO A FIRST SET COMPRISING A PLURALITY OF THE PASSAGEWAYS THROUGH THE CONSTRICTIONS THEREIN, MEANS SERVING TO MAKE A COMMON SUPPLY OF (METAL HALIDE) CHLORIDE VAPOR OF A METAL OF THE GROUP CONSISTING OF TITANIUM, SILICON AND ALUMINIUM AVAILABLE TO A SECOND SET COMPRISING A PLURALITY OF PASSAGEWAYS THROUGH THE CONSTRICTIONS THEREIN, THE SETS OF PASSAGEWAYS BEING RELATIVELY DISPERSED WITH FIRST SET PASSAGEWAYS BEING LOCATED BOTH INWARDLY OF AND OUTWARDLY OF SECOND SET PASSAGEWAYS RADIALLY WITH RESPECT TO THE SHAFT FURNACE TO ENSURE THAT THE OXYGEN AND METAL (HALIDE) CHLORIDE VAPOR WILL INTERMINGLE IN THE FLUIDIZED BED, AND MEANS FOR MAINTAINING THE DEPTH OF THE BED OF INERT SOLID MATERIAL PARTICLES TO BE FLUIDIZED LOW ENOUGH SO THAT THE PRESSURE DROP OF THE METAL (HALIDE) CHLORIDE AND OXYGEN STREAMS AS THEY PASS THROUGH SAID CONSTRICTIONS AND INTO THE BED IS AT LEAST ONE-HALF THE PRESSURE DROP ACROSS THE BED.
Claim 3
Dependent Claim
173 words
IN A METHOD OF PREPARING METAL OXIDE BY ESTABLISHING A FLUIDIZED BED OF SOLIDS AND INTRODUCING A (HALIDE) CHLORIDE OF A METAL OF THE GROUP CONSISTING OF TITANIUM, SILICON AND ALUMINUM WHICH IS IN VAPOR STATE AT 350*C. AND OXYGEN INTO THE BED AND CARRYING AWAY AT LEAST A PORTION OF THE METAL OXIDE WITH THE GASES LEAVING THE BED, THE IMPROVEMENT WHICH COMPRISES INTRODUCING THE METAL (HALIDE) CHLORIDE INTO A LOWER PORTION OF THE BED IN A MULTIPLICITY OF DISPERSED STREAMS AND INTRODUCING THE OXYGEN INTO A LOWER PORTION OF THE BED IN A MULTIPLICITY OF OTHER DISPERSED STREAMS WHICH ARE INTERPERSED WITH THE DISPERSED METAL (HALIDE) CHLORIDE STREAMS, THE STREAMS ENTERING THE BED AROUND THE PERIMETER THEREOF BEING STREAMS OF OXYGEN, AND MAINTAINING THE DEPTH OF THE BED LOW ENOUGH SO THAT THE PRESSURE DROP ACROSS THE CONDUITS IS AT LEAST ONE-HALF THE PRESSURE DROP ACROSS THE BED AND THE ASCENDING STREAMS OF METAL (HALIDE) CHLORIDE COMINGLE INTIMATELY WITH THE ASCENDING STREAMS OF OXYGEN IN THE BED WITHIN THE PERIMETER THEREOF.
Claim 4
Dependent Claim
173 words
IN A METHOD OF PREPARING METAL OXIDE BY ESTABLISHING A FLUIDIZED BED OF SOLIDS AND INTRODUCING A (HALIDE) CHLORIDE OF A METAL OF THE GROUP CONSISTING OF TITANIUM, SILICON AND ALUMINUM WHICH IS IN VAPOR STATE AT 350*C. AND OXYGEN INTO THE BED AND CARRYING AWAY AT LEAST A PORTION OF THE METAL OXIDE WITH THE GASES LEAVING THE BED, THE IMPROVEMENT WHICH COMPRISES INTRODUCING THE METAL (HALIDE) CHLORIDE INTO A LOWER PORTION OF THE BED IN A MULTIPLICITY OF DISPERSED STREAMS AND INTRODUCING THE OXYGEN INTO A LOWER PORTION OF THE BED IN A MULTIPLICITY OF OTHER DISPERSED STREAMS WHICH ARE INTERPERSED WITH THE DISPERSED METAL (HALIDE) CHLORIDE STREAMS, THE STREAMS ENTERING THE BED AROUND THE PERIMETER THEREOF BEING STREAMS OF OXYGEN, AND MAINTAINING THE DEPTH OF THE BED LOW ENOUGH SO THAT THE PRESSURE DROP ACROSS THE CONDUITS IS AT LEAST ONE-HALF THE PRESSURE DROP ACROSS THE BED AND THE ASCENDING STREAMS OF METAL (HALIDE) CHLORIDE COMINGLE INTIMATELY WITH THE ASCENDING STREAMS OF OXYGEN IN THE BED WITHIN THE PERIMETER THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |