US3071804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prilling tower and process
Assignee: Phillips Petroleum Co
•
Filing: 1960-07-15
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Granted: 1963-01-08
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Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Sherman E Meek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:04
CPC Classifications
C; C05; C05C; C05C1/00; C05C1/02; B; B01; B01J; B01J2/00; B01J2/02; B01J2/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PRILLING TOWER FOR PRILLING AMMONIUM NITRATE HAVING IN ITS TOP SECTION MEANS FOR FORMING AND DISPERSING MOLTEN DROPLETS OF AMMONIUM NITRATE INTO THE SUBJACENT TOWER SECTION FOR GRAVITATION THERETHRU TO THE BOTTOM THEREOF; MEANS FOR PASSING AIR UP SAID TOWER AND VENTING SAME FROM AN UPPER SECTION THEREOF BELOW FIRST SAID MEANS INCLUDING A EXPANDED AIRR CHAMBER SURROUNDING THE BASE OF SAID TOWER HAVING AIR SUPPLY CONDUIT MEANS OPENING THEREINTO FOR COOLING SAID DROPLETS TO PRILLS; AN OPEN UNOBSTRUCTED PRILL OUTLET IN THE BOTTOM OF SAID TOWER IN THE CENTER THEREOF; A SERIES OF LOUVERS POSITIONED INWARDLY
Claim 2
Dependent Claim
98 words
A PRILLING TOWER FOR PRILLING AMMONIUM NITRATE HAVING IN ITS TOP SECTION MEANS FOR FORMING AND DISPERSING MOLTEN DROPLETS OF AMMONIUM NITRATE INTO THE SUBJACENT TOWER SECTION FOR GRAVITATION THERETHRU TO THE BOTTOM THEREOF; MEANS FOR PASSING AIR UP SAID TOWER AND VENTING SAME FROM AN UPPER SECTION THEREOF BELOW FIRST SAID MEANS INCLUDING A EXPANDED AIRR CHAMBER SURROUNDING THE BASE OF SAID TOWER HAVING AIR SUPPLY CONDUIT MEANS OPENING THEREINTO FOR COOLING SAID DROPLETS TO PRILLS; AN OPEN UNOBSTRUCTED PRILL OUTLET IN THE BOTTOM OF SAID TOWER IN THE CENTER THEREOF; A SERIES OF LOUVERS POSITIONED INWARDLY
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |