US3205061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dispersing urea in paraffin wax
Assignee: Sunoco Inc
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Filing: 1964-02-20
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Granted: 1965-09-07
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph C Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:58
CPC Classifications
C; C05; C05G; C05G5/00; C05G5/30; C05G5/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 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 AN ADDUCT WHICH COMPRISES (1) HEATING SAID PARAFFIN WAX TO ABOVE ITS MELTING POINT WHEREBY MOLTEN PARAFFIN WAX NORMALLY SUSCEPTIBLE TO ADDUCTION IS OBTAINED, (2) DISSOLVING IN THE RESULTING MOLTEN PARAFFIN WAX AN ADDUCT INHIBITOR SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBONS HAVING AT LEAST TWO ALKYL GROUPS ATTACHED TO NUCLEAR CARBONS OF ONE AROMATIC NUCLEUS, SAID ALKYL GROUPS CONTAINING AT LEAST 5 CARBON ATOMS, THE AMOUNT OF SAID ADDUCT INHIBITOR BEING 0.5-40% BY WEIGHT OF SAID MOLTEN PARAFFIN WAX, (3) DISPERSING SOLID UREA IN THE MOLTEN PARAFFIN WAX CONTAINING SAID ADDUCT INHIBITOR, AND (4) COOLING THE RESULTING DISPERSION TO BELOW THE MELTING POINT OF THE WAX WHEREBY A SLOW RELEASE FERTILIZER COMPRISING A DISPERSION OF SOLID UREA IN SOLID PARAFFIN WAX IS OBTAINED.
Claim 2
Dependent Claim
155 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 AN ADDUCT WHICH COMPRISES (1) HEATING SAID PARAFFIN WAX TO ABOVE ITS MELTING POINT WHEREBY MOLTEN PARAFFIN WAX NORMALLY SUSCEPTIBLE TO ADDUCTION IS OBTAINED, (2) DISSOLVING IN THE RESULTING MOLTEN PARAFFIN WAX AN ADDUCT INHIBITOR SELECTED FROM THE GROUP CONSISTING OF AROMATIC HYDROCARBONS HAVING AT LEAST TWO ALKYL GROUPS ATTACHED TO NUCLEAR CARBONS OF ONE AROMATIC NUCLEUS, SAID ALKYL GROUPS CONTAINING AT LEAST 5 CARBON ATOMS, THE AMOUNT OF SAID ADDUCT INHIBITOR BEING 0.5-40% BY WEIGHT OF SAID MOLTEN PARAFFIN WAX, (3) DISPERSING SOLID UREA IN THE MOLTEN PARAFFIN WAX CONTAINING SAID ADDUCT INHIBITOR, AND (4) COOLING THE RESULTING DISPERSION TO BELOW THE MELTING POINT OF THE WAX WHEREBY A SLOW RELEASE FERTILIZER COMPRISING A DISPERSION OF SOLID UREA IN SOLID PARAFFIN WAX IS OBTAINED.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |