US3354933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray drying process for producing granulates
Assignee: ThyssenKrupp Industrial Solutions AG
•
Filing: 1965-04-20
•
Granted: 1967-11-28
•
Expires: 1985-04-20
Abstract
No abstract record available.
Inventors
- 👤 Wengeler Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:10
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/02; B01J2/04; Y; Y10; Y10S; Y10S159/00; Y10S159/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR THE GRANULATION OF CHEMICAL MATERIALS BY SPRAYING THE MATIERIALS IN DROPLET FORM IN A SPRAY TOWER AND INTRODUCING A GAS THROUGH THE FLOOR OF THE TOWER COUNTERCURRENT TO THE FALLING DROPS, CHARACTERIZED IN THAT THE GAS IS INTRODUCED THROUGH DIFFERENT SEPARATED CONCENTRIC SLOTS IN THE FLOOR OF THE TOWER AT VARIABLE TEMPERATURES SO THAT HOT GAS ENTERS THE TOWER THROUGH THE OUTER CONCENTRIC SLOTS AND COOL GAS ENTERS THE TOWER THROUGH THE INNER CONCENTRIC SLOTS.
Claim 2
Dependent Claim
78 words
A PROCESS FOR THE GRANULATION OF CHEMICAL MATERIALS BY SPRAYING THE MATIERIALS IN DROPLET FORM IN A SPRAY TOWER AND INTRODUCING A GAS THROUGH THE FLOOR OF THE TOWER COUNTERCURRENT TO THE FALLING DROPS, CHARACTERIZED IN THAT THE GAS IS INTRODUCED THROUGH DIFFERENT SEPARATED CONCENTRIC SLOTS IN THE FLOOR OF THE TOWER AT VARIABLE TEMPERATURES SO THAT HOT GAS ENTERS THE TOWER THROUGH THE OUTER CONCENTRIC SLOTS AND COOL GAS ENTERS THE TOWER THROUGH THE INNER CONCENTRIC SLOTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |