Patent US3242237A successfully refreshed from Google Patents.
US3242237A
Expired / Lapsed
US
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Method of preparing slow release fertilizer particles
Assignee: Sunoco Inc
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Filing: 1963-09-11
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Granted: 1966-03-22
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Expires: 1983-09-11
Abstract
No abstract record available.
Inventors
- 👤 Steven G Belak
- 👤 Robert H Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:21
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/02; B01J2/06; C; C05; C05G; C05G5/00; C05G5/30; C05G5/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
METHOD OF PREPARING SOLID SLOW RELEASE FERTILIZER PARTICLES WHICH COMPRISES FORMING A FLUID FERTILIZER COMPOSITION COMPRISING WATER SOLUBLE SOLID FERTILIZER FINELY DISPERSED IN MOLTEN WAX, FLOWING A NARROW STREAM OF SAID FLUID FERTILIZER COMPOSITION DOWNWARDLY AT ELEVATED TEMPERATURE TOWARD A BODY OF AQUEOUS LIQUID SATURATED WITH RESPECT TO SAID SOLID FERTILIZER AND MAINTAINED AT A TEMPERATURE BELOW THE SOLIFIFICATION POINT OF THE COMPOSITION, DROPPING THE COMPOSITION INTO SAID SATURATED AQUEOUS LIQUID IN THE FORM OF DROPLETS, WHEREBY THE COMPOSITION
Claim 2
Dependent Claim
79 words
METHOD OF PREPARING SOLID SLOW RELEASE FERTILIZER PARTICLES WHICH COMPRISES FORMING A FLUID FERTILIZER COMPOSITION COMPRISING WATER SOLUBLE SOLID FERTILIZER FINELY DISPERSED IN MOLTEN WAX, FLOWING A NARROW STREAM OF SAID FLUID FERTILIZER COMPOSITION DOWNWARDLY AT ELEVATED TEMPERATURE TOWARD A BODY OF AQUEOUS LIQUID SATURATED WITH RESPECT TO SAID SOLID FERTILIZER AND MAINTAINED AT A TEMPERATURE BELOW THE SOLIFIFICATION POINT OF THE COMPOSITION, DROPPING THE COMPOSITION INTO SAID SATURATED AQUEOUS LIQUID IN THE FORM OF DROPLETS, WHEREBY THE COMPOSITION
References Cited (Backward Citations)
US1538730A
Cited
US2790201A
Cited
US2923033A
Cited
US2908041A
Cited
US2939781A
Cited
US3023171A
Cited
US3096171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |