US3349500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agglomerative drying
Assignee: Dorr Oliver Inc
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Filing: 1966-03-23
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Granted: 1967-10-31
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Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:33
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F26B1/00; F26B1/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF TREATING A WET STICKY MASS OF FINELY DIVIDED INORGANIC CRYSTALLINE PRECIPITATE HAVING A PARTICLE SIZE WHICH IS SUBSTANTIALLY MINUS 200 MESH WHICH COMPRISES, ADDING FINE DUST-LIKE SOLID PARTICLES TO SAID STICKY MASS TO FORM INDIVIDUAL FLUIDIZABLE SIZE AGGLOMERATES, EACH HAVING A REDUCED MOISTURE CONTENT AND EACH COATED WITH A LAYER OF FINE DUST, FEEDING THE SO-CONDITIONED COATED AGGLOMERATES TO A FLUIDIZED BED CONTAINING DRY AGGLOMERATES FORMED FROM SAID MATERIAL, SUPPLYING FLUIDIZING GAS TO SAID BED AT A TEMPERATURE SUFFICIENT TO FORM SAID AGGLOMERATES BY DRYING, WHILE ALLOWING FINES RESULTING FROM THIS DRYING OPERATION TO BE CARRIED OFF WITH THE SPENT FLUIDIZING GS, AND CONTINUOUSLY WITHDRAWING THE THUS FORMED AGGLOMERATED FROM THE BED.
Claim 2
Independent Claim
115 words
THE METHOD OF TREATING A WET STICKY MASS OF FINELY DIVIDED INORGANIC CRYSTALLINE PRECIPITATE HAVING A PARTICLE SIZE WHICH IS SUBSTANTIALLY MINUS 200 MESH WHICH COMPRISES, ADDING FINE DUST-LIKE SOLID PARTICLES TO SAID STICKY MASS TO FORM INDIVIDUAL FLUIDIZABLE SIZE AGGLOMERATES, EACH HAVING A REDUCED MOISTURE CONTENT AND EACH COATED WITH A LAYER OF FINE DUST, FEEDING THE SO-CONDITIONED COATED AGGLOMERATES TO A FLUIDIZED BED CONTAINING DRY AGGLOMERATES FORMED FROM SAID MATERIAL, SUPPLYING FLUIDIZING GAS TO SAID BED AT A TEMPERATURE SUFFICIENT TO FORM SAID AGGLOMERATES BY DRYING, WHILE ALLOWING FINES RESULTING FROM THIS DRYING OPERATION TO BE CARRIED OFF WITH THE SPENT FLUIDIZING GS, AND CONTINUOUSLY WITHDRAWING THE THUS FORMED AGGLOMERATED FROM THE BED.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |