Patent US400627A successfully refreshed from Google Patents.
Patent US2990249A successfully refreshed from Google Patents.
US2990249A
Expired / Lapsed
US
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Process of preparing finely divided oxides by hydrolysis
Assignee: Evonik Operations GmbH
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Filing: 1958-10-09
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Granted: 1961-06-27
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Expires: 1978-10-09
Abstract
No abstract record available.
Inventors
- 👤 Wagner Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:53
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/18; C01B33/181; C01B33/183; C01B13/00; C01B13/14; C01B13/20; C01B13/22; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE PROCESS OF PREPARING FINELY DIVIDED OXIDES OF METALS AND METALLOIDS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, ZINC,TITANIUM AND SILICON BY HYDROLYSIS OF VOLATILE HYDROLYZABLE CHLORINE COMPOUNDS THEREOF, CHARACTERIZED BY THE STEPS OF TURBULENTLY AND HOMOGENEOUSLY PREMIXING IN AN ENCLOSED SPACE GASES PRODUCING WATER UPON COMBUSTION TOGETHER WITH THE VOLATILE CHLORIDE TO BE HYDROLYZED, PASSING THE GASEOUS MIXTURE IN LAMINAR FLOW THROUGH A BURNER, AND CAUSING THE COMPONENT GASES TO REACT IN COMMON IN A FLAME ISSUING FROM THE BURNER.
Claim 2
Dependent Claim
81 words
THE PROCESS OF PREPARING FINELY DIVIDED OXIDES OF METALS AND METALLOIDS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, ZINC,TITANIUM AND SILICON BY HYDROLYSIS OF VOLATILE HYDROLYZABLE CHLORINE COMPOUNDS THEREOF, CHARACTERIZED BY THE STEPS OF TURBULENTLY AND HOMOGENEOUSLY PREMIXING IN AN ENCLOSED SPACE GASES PRODUCING WATER UPON COMBUSTION TOGETHER WITH THE VOLATILE CHLORIDE TO BE HYDROLYZED, PASSING THE GASEOUS MIXTURE IN LAMINAR FLOW THROUGH A BURNER, AND CAUSING THE COMPONENT GASES TO REACT IN COMMON IN A FLAME ISSUING FROM THE BURNER.
References Cited (Backward Citations)
US2614906A
Cited
US2798792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |