US3033801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming solid cakes and pellets from metal oxide aerogels
Assignee: Evonik Operations GmbH
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Filing: 1958-02-06
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Granted: 1962-05-08
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Expires: 1978-02-06
Abstract
No abstract record available.
Inventors
- 👤 Kloepfer Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:25
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/48; B01J23/50; B01J23/54; B01J23/56; B01J23/60; B01J23/70; B01J23/74; B01J23/755; B01J37/00; B01J37/0009; B01J21/00; B01J21/06; B01J21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
THE PROCESS FOR PRODUCING SOLID PELLETS OR CAKES FOR USE AS CATALYSTS FROM METAL OXIDE AEROGELS, WHICH CONSISTS IN MIXING A DEHYDRATED OXIDE, SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF CHROMIUM, SILICON, ALUMINUM, ZINC, CADMIUM AND NICKEL, PREPARED BY REACTING WITH OXYGEN A VAPORIZED HALIDE OF AN ELEMENT OF THIS GROUP, WITH SUFFICIENT AQUEOUS SOLUTION TO FORM A VISCOUS, BINDER-FREE PASTE, SHAPING THE PASTE INTO SOLID OBJECTS SELECTED FROM THE GROUP CONSISTING OF CAKES AND PELLETS, AND THEN REMOVING LIQUID THEREFROM THUS PRODUCING OBJECTS OF A DENSITY OF 0.5 TO 0.7 OF HIGH CATALYTIC EFFECT, STABLE AT THE HIGH TEMPERATURE OF CATALYTIC REACTION, AND OF A COHESIVE STRENGTH SUFFICIENT TO MAINTAIN THEIR SHAPE AND INTERGREITY AGAINST DISINTEGRATION WHEN PLACED IN COLUMN FORMATION APPROXIMATELY ONE-HALF METER IN HEIGHT.
Claim 2
Dependent Claim
129 words
THE PROCESS FOR PRODUCING SOLID PELLETS OR CAKES FOR USE AS CATALYSTS FROM METAL OXIDE AEROGELS, WHICH CONSISTS IN MIXING A DEHYDRATED OXIDE, SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF CHROMIUM, SILICON, ALUMINUM, ZINC, CADMIUM AND NICKEL, PREPARED BY REACTING WITH OXYGEN A VAPORIZED HALIDE OF AN ELEMENT OF THIS GROUP, WITH SUFFICIENT AQUEOUS SOLUTION TO FORM A VISCOUS, BINDER-FREE PASTE, SHAPING THE PASTE INTO SOLID OBJECTS SELECTED FROM THE GROUP CONSISTING OF CAKES AND PELLETS, AND THEN REMOVING LIQUID THEREFROM THUS PRODUCING OBJECTS OF A DENSITY OF 0.5 TO 0.7 OF HIGH CATALYTIC EFFECT, STABLE AT THE HIGH TEMPERATURE OF CATALYTIC REACTION, AND OF A COHESIVE STRENGTH SUFFICIENT TO MAINTAIN THEIR SHAPE AND INTERGREITY AGAINST DISINTEGRATION WHEN PLACED IN COLUMN FORMATION APPROXIMATELY ONE-HALF METER IN HEIGHT.
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |