Patent US2951044A successfully refreshed from Google Patents.
US2951044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable dispersions of metal oxide blends and process for their manufacture
Assignee: Evonik Operations GmbH
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Filing: 1955-07-18
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Granted: 1960-08-30
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Expires: 1975-07-18
Abstract
No abstract record available.
Inventors
- 👤 Wagner Ernst
- 👤 Diether Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/14; C01B13/20; C01B13/22; C01B13/24; C09; C09K; C09K23/00; C09K23/002; C01P; C01P2006/00; C01P2006/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
AS A NEW COMPOSITION OF MATTER A SUBSTANTIALLY STABLE SUSPENSION IN A PREDOMINANTLY AQUEOUS MEDIUM OF AT LEAST 15% BY WEIGHT OF THE TOTAL COMPOSITION OF CONFORMED PYROGENIC OXIDES OF (1) SILICON AND (2) A METAL CHOSEN FROM THE GROUP OF THE REFRACTORY INORGANIC METALS, SAID OXIDES HAVING BEEN CONFORMED BY SIMULTANEOUS REACTION, WITH AN OXYGEN-CONTAINING GAS AT TEMPERATURES ABOVE ABOUT 600*C., OF A MIXTURE OF HALIDE COMPOUNDS OF (1) SILICON AND (2) THE CORRESPONDING METAL,
Claim 2
Dependent Claim
76 words
AS A NEW COMPOSITION OF MATTER A SUBSTANTIALLY STABLE SUSPENSION IN A PREDOMINANTLY AQUEOUS MEDIUM OF AT LEAST 15% BY WEIGHT OF THE TOTAL COMPOSITION OF CONFORMED PYROGENIC OXIDES OF (1) SILICON AND (2) A METAL CHOSEN FROM THE GROUP OF THE REFRACTORY INORGANIC METALS, SAID OXIDES HAVING BEEN CONFORMED BY SIMULTANEOUS REACTION, WITH AN OXYGEN-CONTAINING GAS AT TEMPERATURES ABOVE ABOUT 600*C., OF A MIXTURE OF HALIDE COMPOUNDS OF (1) SILICON AND (2) THE CORRESPONDING METAL,
Claim 3
Dependent Claim
95 words
A PROCESS FOR PRODUCING A STABLE AQUEOUS SUSPENSION OF REFRACTORY INORGANIC METAL OXIDES WHICH COMPRISES REACTING A GASEOUS MIXTURE OF VOLATILE HALIDES OF SILICON AND A METAL CHOSEN FROM THE GROUP CONSISTING OF THE REFRACTORY INORGANIC METALS WITH AN OXYGEN-CONTAINING GAS AT A TEMPERATURE ABOVE ABOUT 600*C., THEREBY CONVERTING SAID METAL HALIDES TO THE CORRESPONDING METAL OXIDES IN AN INTIMATE CONFORMED STATE, SEPARATING SAID CONFORMED METAL OXIDES FROM THE GASEOUS REACTION MEDIUM, AND MIXING WITH AGITATION AT LEAST 15% OF SAID CONFORMED METAL OXIDES BY WEIGHT OF THE TOTAL SUSPENSION INTO A PREDOMINANTLY AQUEOUS MEDIUM.
Claim 4
Dependent Claim
95 words
A PROCESS FOR PRODUCING A STABLE AQUEOUS SUSPENSION OF REFRACTORY INORGANIC METAL OXIDES WHICH COMPRISES REACTING A GASEOUS MIXTURE OF VOLATILE HALIDES OF SILICON AND A METAL CHOSEN FROM THE GROUP CONSISTING OF THE REFRACTORY INORGANIC METALS WITH AN OXYGEN-CONTAINING GAS AT A TEMPERATURE ABOVE ABOUT 600*C., THEREBY CONVERTING SAID METAL HALIDES TO THE CORRESPONDING METAL OXIDES IN AN INTIMATE CONFORMED STATE, SEPARATING SAID CONFORMED METAL OXIDES FROM THE GASEOUS REACTION MEDIUM, AND MIXING WITH AGITATION AT LEAST 15% OF SAID CONFORMED METAL OXIDES BY WEIGHT OF THE TOTAL SUSPENSION INTO A PREDOMINANTLY AQUEOUS MEDIUM.
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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |