Patent US3867124A successfully refreshed from Google Patents.
US3867124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble fertilizer
Assignee: Individual
•
Filing: 1970-10-26
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Granted: 1975-02-18
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Expires: 1990-10-26
Abstract
Abstract Granular, water soluble fertilizer having particles of ammonium nitrate, or ammonium nitrate and potassium nitrate, coated with the reaction product of urea and one or more of the following water soluble mineral element: salts, ferrous sulfate (FeSO4.7H2O), magnesium sulfate (MgSO4.7H2O), and copper sulfate (CuSO4.5H2O).
Inventors
- 👤 John W Church
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:53
CPC Classifications
C; C05; C05C; C05C1/00; C05C1/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
44 words
A GRANULAR, WATER SOLUBLE FERTILIZER COMPRISING AMMONIUM NITRATE PARTICLES WITH A WATER SOLUBLE COATING THEREON WHICH COMPRISES THE REACTION PRODUCT OF UREA AND ONE OR MORE OF THE FOLLOWING WATER SOLUBLE MINERAL ELEMENT SALTS: FERROUS SULFATE (FESO4,7H2O), MAGNESIUM SULFATE (MAGSO4,7H2O), AND COPPER SULFATE (CUSO4,5H2O).
Claim 2
Dependent Claim
44 words
A GRANULAR, WATER SOLUBLE FERTILIZER COMPRISING AMMONIUM NITRATE PARTICLES WITH A WATER SOLUBLE COATING THEREON WHICH COMPRISES THE REACTION PRODUCT OF UREA AND ONE OR MORE OF THE FOLLOWING WATER SOLUBLE MINERAL ELEMENT SALTS: FERROUS SULFATE (FESO4,7H2O), MAGNESIUM SULFATE (MAGSO4,7H2O), AND COPPER SULFATE (CUSO4,5H2O).
Claim 3
Dependent Claim
24 words
A fertilizer according to claim 1, wherein the weight of ammonium nitrate in the coated particles is several times the weight of the coating.
Claim 4
Dependent Claim
25 words
A fertilizer according to claim 2, wherein said ammonium nitrate particles are prills with an average size of about 1/16 to 3/32 inch in diameter.
Claim 5
Dependent Claim
44 words
A granular, water soluble fertilizer comprising nitrate salt prills with a water soluble coating thereon which comprises the reaction product of urea and one or more of the following water soluble mineral element salts: ferrous sulfate (FeSO4.7H2O), magnesium sulfate (MgSO4.7H2O), and copper sulfate (CuSO4.5H2O).
Claim 6
Dependent Claim
44 words
A granular, water soluble fertilizer comprising nitrate salt prills with a water soluble coating thereon which comprises the reaction product of urea and one or more of the following water soluble mineral element salts: ferrous sulfate (FeSO4.7H2O), magnesium sulfate (MgSO4.7H2O), and copper sulfate (CuSO4.5H2O).
Claim 7
Dependent Claim
22 words
A fertilizer according to claim 4, wherein said nitrate salt prills comprise ammonium nitrate and potassium nitrate prills mixed together substantially uniformly.
Claim 8
Dependent Claim
21 words
A fertilizer according to claim 5, wherein said coating comprises the reaction product of urea and ferrous sulfate and magnesium sulfate.
Claim 9
Dependent Claim
25 words
A fertilizer according to claim 6, and further comprising manganese sulfate particles dispersed substantially uniformly among the coated prills of ammonium nitrate and potassium nitrate.
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |