Patent US3259482A successfully refreshed from Google Patents.
US3259482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow release fertilizer with a plurality of epoxy/polyester resin coatings
Assignee: Archer Daniels Midland Co
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Filing: 1965-10-14
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Granted: 1966-07-05
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Expires: 1985-10-14
Abstract
No abstract record available.
Inventors
- 👤 Louis I Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:14
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/006; C; C05; C05G; C05G5/00; C05G5/30; C05G5/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A COATED FERTILIZER COMPRISING: (A) A CORE OF GRANULAR FERTILIZER CONTAINING AT LEAST ONE WATER SOLUBLE PLANT NUTRIENT SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE COMPOUNDS OF NITROGEN, PHOSPHORUS, AND POTASSIUM; (B) A PLURALITY OF CURED COATINGS OF AN EPOXY/POLYESTER RESIN SYSTEM SURROUNDING SAID CORE, EACH OF SAID COATING BEING IN THE AMOUNT OF FROM ABOUT 0.1 TO 10 PERCENT BY WEIGHT OF SAID CORE, AND, (C) THE TOTAL COATING WEIGHT BEING SUCH AS TO DELAY AND EFFECT A SLOW AND GRADUAL RELEASE OF SAID WATER SOLUBLE PLANT NUTRIENT; (D) SAID CURED COATINGS OF EPOXY/POLYESTER RESIN SYSTEM BEING THE REACTION PRODUCT OF: (1) EPOXY COMPONENT CONSISTING OF AT LEAST 80% BY WEIGHT OF EPOXIDIZED FATTY COMPOUND, SAID EPOXIDIZED FATTY COMPOUND HAVING 8-26 CARBON ATOMS IN ITS FATTY RADICALS AND AN INTERNAL OXIRANE VALUE OF 3% TO 10%, AND (2) POLYESTER CURING AGENT FOR SAID EPOXIDIZED FATTY COMPOUND, SAID CURING AGENT BEING THE ESTERIFICATION REACTION PRODUCT OF POLYHYDRIC ALCOHOL AND POLYCARBOXYLIC ACID WHEREIN THE POLYESTER IS PREPARED FROM AN ESTERIFICATION REACTION MIXTURE WHICH INITIALLY HAS A CARBOXLY TO HYDROXYL RATIO OF 1-3:1; SAID ESTERIFICATION RE ACTION PRODUCT COMPRISING POLYESTER OF THE FORMULA:
Claim 2
Dependent Claim
192 words
A COATED FERTILIZER COMPRISING: (A) A CORE OF GRANULAR FERTILIZER CONTAINING AT LEAST ONE WATER SOLUBLE PLANT NUTRIENT SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE COMPOUNDS OF NITROGEN, PHOSPHORUS, AND POTASSIUM; (B) A PLURALITY OF CURED COATINGS OF AN EPOXY/POLYESTER RESIN SYSTEM SURROUNDING SAID CORE, EACH OF SAID COATING BEING IN THE AMOUNT OF FROM ABOUT 0.1 TO 10 PERCENT BY WEIGHT OF SAID CORE, AND, (C) THE TOTAL COATING WEIGHT BEING SUCH AS TO DELAY AND EFFECT A SLOW AND GRADUAL RELEASE OF SAID WATER SOLUBLE PLANT NUTRIENT; (D) SAID CURED COATINGS OF EPOXY/POLYESTER RESIN SYSTEM BEING THE REACTION PRODUCT OF: (1) EPOXY COMPONENT CONSISTING OF AT LEAST 80% BY WEIGHT OF EPOXIDIZED FATTY COMPOUND, SAID EPOXIDIZED FATTY COMPOUND HAVING 8-26 CARBON ATOMS IN ITS FATTY RADICALS AND AN INTERNAL OXIRANE VALUE OF 3% TO 10%, AND (2) POLYESTER CURING AGENT FOR SAID EPOXIDIZED FATTY COMPOUND, SAID CURING AGENT BEING THE ESTERIFICATION REACTION PRODUCT OF POLYHYDRIC ALCOHOL AND POLYCARBOXYLIC ACID WHEREIN THE POLYESTER IS PREPARED FROM AN ESTERIFICATION REACTION MIXTURE WHICH INITIALLY HAS A CARBOXLY TO HYDROXYL RATIO OF 1-3:1; SAID ESTERIFICATION RE ACTION PRODUCT COMPRISING POLYESTER OF 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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |