US3002808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of ultrafine refractory oxide
Assignee: Westinghouse Electric Corp
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Filing: 1957-08-07
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Granted: 1961-10-03
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Expires: 1977-08-07
Abstract
No abstract record available.
Inventors
- 👤 Mont Bernard D La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:13
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C01; C01F; C01F15/00; C01F17/00; C01F17/20; C01F17/206; C01F17/224; C01F17/235; C01G; C01G43/00; C01G43/01; C01G43/025; C01P; C01P2004/00; C01P2004/60; C01P2004/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A METHOD FOR PRODUCING AN ULTRAFINE METALLIC OXIDE FROM THE GROUP CONSISTING OF THORIUM OXIDE, URANIUM OXIDE, AND CERIUM OXIDE, SAID METHOD COMPRISING THE STEPS OF DISSOLVING IN WATER A WATER SOLUBLE COMPOUND OF THE CORRESPONDING METAL, INJECTING A FINE SPRAY OF THE SOLUTION THUS OBTAINED INTO THE INTERIOR OF A FLAME HAVING A TEMPERATURE SUFFICIENT TO VAPORIZE THE AQUEOUS PORTIONS OF SAID SOLUTION AND TO CONVERT SAID SOLUBLE COMPOUND TO ITS CORRESPONDING OXIDE, DIRECTING SAID SPRAY SUBSTANTIALLY AXIALLY THROUGH SAID FLAME, FLOWING A CURTAIN OF WATER TRANSVERSELY OF SAID FLAME AT A POSITION ADJACENT THE TIP OF THE FLAME, SAID SPRAY AND SAID FLAME BEING DIRECTED GENERALLY TOWARD SAID CURTAIN, AND SAID SPRAY IN ADDITION BEING INJECTED WITH SUFFICIENT VELOCITY TO CARRY PARTICLES THEREOF THROUGH SAID FLAME AND TO CARRY PARTICLES OF SAID OXIDE TO SAID CURTAIN.
Claim 2
Independent Claim
138 words
A METHOD FOR PRODUCING AN ULTRAFINE METALLIC OXIDE FROM THE GROUP CONSISTING OF THORIUM OXIDE, URANIUM OXIDE, AND CERIUM OXIDE, SAID METHOD COMPRISING THE STEPS OF DISSOLVING IN WATER A WATER SOLUBLE COMPOUND OF THE CORRESPONDING METAL, INJECTING A FINE SPRAY OF THE SOLUTION THUS OBTAINED INTO THE INTERIOR OF A FLAME HAVING A TEMPERATURE SUFFICIENT TO VAPORIZE THE AQUEOUS PORTIONS OF SAID SOLUTION AND TO CONVERT SAID SOLUBLE COMPOUND TO ITS CORRESPONDING OXIDE, DIRECTING SAID SPRAY SUBSTANTIALLY AXIALLY THROUGH SAID FLAME, FLOWING A CURTAIN OF WATER TRANSVERSELY OF SAID FLAME AT A POSITION ADJACENT THE TIP OF THE FLAME, SAID SPRAY AND SAID FLAME BEING DIRECTED GENERALLY TOWARD SAID CURTAIN, AND SAID SPRAY IN ADDITION BEING INJECTED WITH SUFFICIENT VELOCITY TO CARRY PARTICLES THEREOF THROUGH SAID FLAME AND TO CARRY PARTICLES OF SAID OXIDE TO SAID CURTAIN.
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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |