US2801902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar aggregates of silica spheroids and methods for preparing same
Assignee: EIDP Inc
•
Filing: 1951-10-15
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Granted: 1957-08-06
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Expires: 1971-10-15
Abstract
No abstract record available.
Inventors
- 👤 Guy B Alexander
- 👤 Ralph K Iler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:40
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/146
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
8 words
PLANAR AGGREGATES OF SILICA SPHEROIDS, EACH OF SAID
Claim 2
Dependent Claim
8 words
PLANAR AGGREGATES OF SILICA SPHEROIDS, EACH OF SAID
Claim 3
Independent Claim
94 words
THE METHOD OF PRODUCING FINELY DIVIDED ALUMINUM OXIDE COMPRISING SUSPENDING SOLID PARTICLES OF A HYDRATED SPHEROIDS HAVING A DIAMETER GREATER THAN 5 MILLIMICRONS ALUMINUM SALT IN A CARRIER GAS, INTRODUCING THE SUSPENAND LESS THAN 100 MILLIMICRONS, THE AGGREGATES BEING NOT MORE THAN 3 SPHEROID LAYERS THICK AND HAVING AN AVSION AXIALLY INTO A HEAT INSULTED ELONGATED CIRCULARLY CYLINDRICAL REACTION CHAMBER AND SIMULTANEOUSLY INTROERAG DIMENSION IN THE PLANAR DIRECTION OF AT LEAST 10 TIMES THE THICKNESS. DUCING INTO SAID REACTION CHAMBER A COMBUSTIBLE GAS AND A FREE OXYGEN-CONTAINING GAS, AT LEAST ONE OF SAID GASES
Claim 4
Independent Claim
94 words
THE METHOD OF PRODUCING FINELY DIVIDED ALUMINUM OXIDE COMPRISING SUSPENDING SOLID PARTICLES OF A HYDRATED SPHEROIDS HAVING A DIAMETER GREATER THAN 5 MILLIMICRONS ALUMINUM SALT IN A CARRIER GAS, INTRODUCING THE SUSPENAND LESS THAN 100 MILLIMICRONS, THE AGGREGATES BEING NOT MORE THAN 3 SPHEROID LAYERS THICK AND HAVING AN AVSION AXIALLY INTO A HEAT INSULTED ELONGATED CIRCULARLY CYLINDRICAL REACTION CHAMBER AND SIMULTANEOUSLY INTROERAG DIMENSION IN THE PLANAR DIRECTION OF AT LEAST 10 TIMES THE THICKNESS. DUCING INTO SAID REACTION CHAMBER A COMBUSTIBLE GAS AND A FREE OXYGEN-CONTAINING GAS, AT LEAST ONE OF SAID GASES
Claim 5
Dependent Claim
168 words
IN A PROCESS FOR MAKING A PLANAR AGGREGATES OF SILICA SPHEROIDS FROM AN AQUEOUS SOL HAVING A PH OF 5 TO BEING INTRODUCED TANGENTIALLY AGAINST THE WALL OF SAID CHAMBER TO CREATE A CYCLONIC TURBULENT REACTION ZONE, THE 10,7 AND COMPOSED OF NEGATIVELY CHARGED SILICA SPHEROIDS 5 TO 100 MILLIMICRONS IN DIAMETER, THE STEPS COMOXYGEN-CONTAINING GAS BEING IN AN AMOUNT AT LEAST SUFFICIENT TO BURN THE COMBUSTIBLE GAS AND TO CONVERT THE PRISING ADDING A CATIONIC SURFACE ACTIVE AGENT TO FORM A PLANAR AGGREGATES, THE AMOUNT OF THE CATIONIC SURFACE ALUMINUM SALT TO THE OXIDE, BURNING SAID COMBUSTIBLE GAS TO MAINTAIN A TEMPERATURE WITHIN THE REACTION CHAMBER ACTIVE AGENTS IN MOLS PER 100 GRAMS OF SILICA BEING NOT MORE THAN TWO DIVIDED BY THE DIAMETER OF THE SILICA SUFFICIENT TO CONVERT THE ALUMINUM SALT TO ALUMINUM OXIDE, AND RECOVERING THE ALUMINUM OXIDE FROM THE GASEOUS SPHEROIDS IN MILLIMICRONS, AND THEN HEATING THE RESULTING AQUEOUS SUSPENSION OF PLANAR AGGREGATES AT A TEMREACTION PRODUCTS. PERATURE ABOVE 60*C. TO STRENGTH THEM.
Claim 6
Dependent Claim
168 words
IN A PROCESS FOR MAKING A PLANAR AGGREGATES OF SILICA SPHEROIDS FROM AN AQUEOUS SOL HAVING A PH OF 5 TO BEING INTRODUCED TANGENTIALLY AGAINST THE WALL OF SAID CHAMBER TO CREATE A CYCLONIC TURBULENT REACTION ZONE, THE 10,7 AND COMPOSED OF NEGATIVELY CHARGED SILICA SPHEROIDS 5 TO 100 MILLIMICRONS IN DIAMETER, THE STEPS COMOXYGEN-CONTAINING GAS BEING IN AN AMOUNT AT LEAST SUFFICIENT TO BURN THE COMBUSTIBLE GAS AND TO CONVERT THE PRISING ADDING A CATIONIC SURFACE ACTIVE AGENT TO FORM A PLANAR AGGREGATES, THE AMOUNT OF THE CATIONIC SURFACE ALUMINUM SALT TO THE OXIDE, BURNING SAID COMBUSTIBLE GAS TO MAINTAIN A TEMPERATURE WITHIN THE REACTION CHAMBER ACTIVE AGENTS IN MOLS PER 100 GRAMS OF SILICA BEING NOT MORE THAN TWO DIVIDED BY THE DIAMETER OF THE SILICA SUFFICIENT TO CONVERT THE ALUMINUM SALT TO ALUMINUM OXIDE, AND RECOVERING THE ALUMINUM OXIDE FROM THE GASEOUS SPHEROIDS IN MILLIMICRONS, AND THEN HEATING THE RESULTING AQUEOUS SUSPENSION OF PLANAR AGGREGATES AT A TEMREACTION PRODUCTS. PERATURE ABOVE 60*C. TO STRENGTH THEM.
References Cited (Backward Citations)
US2535659A
Cited
US2561304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |