Patent US2968833A successfully refreshed from Google Patents.
US2968833A
Expired / Lapsed
US
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Method and apparatus for prilling ammonium nitrate
Assignee: Phillips Petroleum Co
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Filing: 1957-05-17
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Granted: 1961-01-24
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Expires: 1977-05-17
Abstract
No abstract record available.
Inventors
- 👤 Haven Clark G De
- 👤 Richard O Welty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:24
CPC Classifications
C; C05; C05C; C05C1/00; C05C1/02; B; B01; B01J; B01J2/00; B01J2/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
IN THE PRODUCTION OF UNIFORMLY SIZED PRILLS FROM A MOLTEN INORGANIC SALT SOLUTION, PARTICULARLY CONCENTRATED AMMONIUM NITRATE METLS, EMPLOYING A METHOD WHERE SAID SOLUTION IS SPRAYED FROM A RESTRICTING ZONE THROUGH A PLURALITY OF KNIFE-EDGED ORIFICES INTO DIRECTED CONTACT WITH A LIQUID-SOLIDIFYING MEDIUM, SUCH AS AIR, THE IMPROVEMENT COMPRISING APPLYING TO SAID LIQUID IN SAID ZONE VIBRATIONS OF A PREDETERMINED FREQUENCY WITHIN THE RANGE OF ABOUT 300 TO ABOUT 1,400 C.P.S., THEREBY INJECTING SUBSTANTIALLY SPHERICAL DROPLETS OF SAID LIQUID FROM SAID RESTRICTING ZONE INTO SAID SOLIDIFYING MEDIUM.
References Cited (Backward Citations)
US1088635A
Cited
US1276245A
Cited
US1503371A
Cited
US1937757A
Cited
US1951790A
Cited
US1980672A
Cited
US2077373A
Cited
US2044806A
Cited
US2298934A
Cited
US2510574A
Cited
US2528407A
Cited
US2714224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |