Water soluble fertilizer

{
  "publication_number": "US3867124A",
  "country": "US",
  "kind": "A",
  "title": "Water soluble fertilizer",
  "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).",
  "claims": [
    "1. 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).",
    "2. A fertilizer according to claim 1, wherein the weight of ammonium nitrate in the coated particles is several times the weight of the coating.",
    "3. 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.",
    "4. 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).",
    "5. A fertilizer according to claim 4, wherein said nitrate salt prills comprise ammonium nitrate and potassium nitrate prills mixed together substantially uniformly.",
    "6. A fertilizer according to claim 5, wherein said coating comprises the reaction product of urea and ferrous sulfate and magnesium sulfate.",
    "7. 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."
  ],
  "cpc": [
    "C05C 1/02"
  ],
  "ipc": [
    "C05C 1/02"
  ],
  "inventors": [
    "John W Church"
  ],
  "filing_date": "1970-10-26",
  "publication_date": "1975-02-18",
  "grant_date": "1975-02-18",
  "priority_date": "1970-10-26",
  "application_number": "US-8414870-A",
  "family_id": "22183165",
  "cited_by_count": 28,
  "citations": [
    "US1966947A",
    "US2030583A",
    "US2943928A",
    "US3070435A",
    "US3018164A",
    "US3148945A",
    "US3148949A",
    "US3325276A",
    "US3423199A",
    "US3560192A",
    "US3617239A"
  ]
}