US2774660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granulation of fertilizers
Assignee: Chemical Construction Corp
•
Filing: 1954-04-26
•
Granted: 1956-12-18
•
Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 Lucien H Cook
- 👤 Jr Alexander W Hodge
- 👤 Colonias John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:21
CPC Classifications
C; C05; C05C; C05C1/00; C05C1/02; Y; Y10; Y10S; Y10S425/00; Y10S425/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS FOR THE PRODUCTION OF UNIFORM AND MOISTURE-STABLE GRANULES OF A NITROGEN FERTILIZER WHICH COMPRISES: HEATING SAID NITROGEN FERTILIZER TO A TEMPERATURE SLIGHTLY ABOVE ITS MELTING POINT; JETTING THE RESULTING MOLTEN FERTILIZER UPWARDLY UNDER A POSITIVE PRESSURE INTO AN UNINTERRUPTED, UNDIRECTIONAL STREAM CONSISTING OF A HOMOGENEOUS BODY OF LIQUID; SEPARATING SUCH STREAM INTO DROPLETS BY THE FORCES OF GRAVITY AND SURFACE TENSION; COUNTERCURRENTLY CONTACTING SAID DRROPLETS WITH AN INERT COOLING GAS THEREBY REMOVING MOISTURE FROM SAID DROPLETS; AND RECOVERING A UNIFORM AND MOISTURE-STABLE PRODUCT.
Claim 2
Dependent Claim
85 words
THE PROCESS FOR THE PRODUCTION OF UNIFORM AND MOISTURE-STABLE GRANULES OF A NITROGEN FERTILIZER WHICH COMPRISES: HEATING SAID NITROGEN FERTILIZER TO A TEMPERATURE SLIGHTLY ABOVE ITS MELTING POINT; JETTING THE RESULTING MOLTEN FERTILIZER UPWARDLY UNDER A POSITIVE PRESSURE INTO AN UNINTERRUPTED, UNDIRECTIONAL STREAM CONSISTING OF A HOMOGENEOUS BODY OF LIQUID; SEPARATING SUCH STREAM INTO DROPLETS BY THE FORCES OF GRAVITY AND SURFACE TENSION; COUNTERCURRENTLY CONTACTING SAID DRROPLETS WITH AN INERT COOLING GAS THEREBY REMOVING MOISTURE FROM SAID DROPLETS; AND RECOVERING A UNIFORM AND MOISTURE-STABLE PRODUCT.
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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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |