Patent US3192033A successfully refreshed from Google Patents.
US3192033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a slow release urea fertilizer
Assignee: Sunoco Inc
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Filing: 1964-02-06
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Granted: 1965-06-29
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Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilmer E Mccorquodale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:18
CPC Classifications
C; C05; C05G; C05G5/00; C05G5/30; C05G5/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
METHOD OF FORMING A SLOW RELEASE FERTILIZER COMPRISING A DISPERSION OF SOLID UREA IN A SOLID PARAFFIN WAX WHICH WHEN IN MOLTEN STATE NORMALLY REACTS WITH SOLID UREA TO FORM A UREA-PARAFFIN WAX ADDUCT WHICH COMPRISES (1) HEATING SAID PARAFFIN WAX TO ABOVE ITS MELTING POINT WHEREBY MOLTEN PARAFFIN WAX NORMALY SUSCEPTIBLE TO ADDUCTION IS OBTAINED, (2) DISSOLVING IN SAID MOLTEN PARAFFIN WAX AN ADDUCT INHIBTOR CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF FATTY ACID TRIGLYCERIDES HAVING THE FORMULA
Claim 2
Dependent Claim
83 words
METHOD OF FORMING A SLOW RELEASE FERTILIZER COMPRISING A DISPERSION OF SOLID UREA IN A SOLID PARAFFIN WAX WHICH WHEN IN MOLTEN STATE NORMALLY REACTS WITH SOLID UREA TO FORM A UREA-PARAFFIN WAX ADDUCT WHICH COMPRISES (1) HEATING SAID PARAFFIN WAX TO ABOVE ITS MELTING POINT WHEREBY MOLTEN PARAFFIN WAX NORMALY SUSCEPTIBLE TO ADDUCTION IS OBTAINED, (2) DISSOLVING IN SAID MOLTEN PARAFFIN WAX AN ADDUCT INHIBTOR CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF FATTY ACID TRIGLYCERIDES HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |