US3020646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for drying fillers of silica or silicate
Assignee: Bayer AG
•
Filing: 1958-12-18
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Granted: 1962-02-13
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Expires: 1978-12-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph Werner
- 👤 Kaule Gustav
- 👤 Podschus Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:10
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/10; F26B17/107; F26B3/00; F26B3/02; F26B3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD OF REMOVING WATER FROM A SILLICEOUS MATERIAL WHICH COMPRISES ESTABLISHING A VORTEX OF HOT INERT GAS HEATED TO DRYING TEMPERATURE, SAID VORTEX HAVING AN ENTRY END AND AN OUTLET END FOR SAID GAS AND A CENTRAL AREA IN WHICH THERE IS FLOW OF GAS TOWARD THE ENTRY END SURROUNDED BY AN EXTERNAL AREA IN WHICH THERE IS CIRCULAR FLOW OF HOT GAS AROUND THE CENTRAL AREA AND TOWARD THE OUTLET END, INTRODUCING THE SILICEOUS MATERIAL INTO CONTACT WITH THE HOT GAS BY FEEDING IT INTO THE CENTRAL AREA AND THEREBY SUSPENDING THE SILICEOUS MATERIAL IN SAID GAS, AND REMOVING THE RESULTING SUSPENSION FROM SAID OUTLET END.
Claim 2
Independent Claim
108 words
A METHOD OF REMOVING WATER FROM A SILLICEOUS MATERIAL WHICH COMPRISES ESTABLISHING A VORTEX OF HOT INERT GAS HEATED TO DRYING TEMPERATURE, SAID VORTEX HAVING AN ENTRY END AND AN OUTLET END FOR SAID GAS AND A CENTRAL AREA IN WHICH THERE IS FLOW OF GAS TOWARD THE ENTRY END SURROUNDED BY AN EXTERNAL AREA IN WHICH THERE IS CIRCULAR FLOW OF HOT GAS AROUND THE CENTRAL AREA AND TOWARD THE OUTLET END, INTRODUCING THE SILICEOUS MATERIAL INTO CONTACT WITH THE HOT GAS BY FEEDING IT INTO THE CENTRAL AREA AND THEREBY SUSPENDING THE SILICEOUS MATERIAL IN SAID GAS, AND REMOVING THE RESULTING SUSPENSION FROM SAID OUTLET END.
References Cited (Backward Citations)
GB285038A
Cited
US2316207A
Cited
US2435927A
Cited
US2615199A
Cited
US2696677A
Cited
US2863727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |