US3234004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized liquid fertilizer compositions
Assignee: Minerals and Chemicals Philipp Corp
•
Filing: 1961-03-28
•
Granted: 1966-02-08
•
Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 Homer A Smith
- 👤 Jr Edgar W Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:43
CPC Classifications
C; C05; C05B; C05B7/00; C05G; C05G5/00; C05G5/20; C05G5/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A HIGHLY CONCENTRATED HOMOGENEOUS STABLE AND FLOWABLE AQUEOUS PLANT FOOD COMPOSITION COMPRISING WATER, AT LEAST ONE PRIMARY PLANT NUTRIENT CRYSTALLINE MATERIAL SELECTED FROM THE GROUP CONSISTING OF UREA, AMMONIUM NITRATE, AMMONIUM PHOSPHATE AND POTASSIUM NITRATE IN AMOUNT IN EXCESS OF ITS SOLUBILITY IN SAID WATER WHEREBY FINELY DIVIDED CRYSTALLINE PARTICLES OF SAID PRIMARY PLANT FOOD MATERIAL ARE PRESENT IN SAID WATER AND COLLOIDAL ATTAPULGITE CLAY DISPERSED IN SAID WATER, SAID CLAY BEING PRESENT IN AMOUNT OF AT LEAST 1/4% OF THE WEIGHT OF SAID COMPOSITION ON A VOLATILE FREE DAY WEIGHT BASIS, AND IN AMOUNT SUFFICIENT TO FORM A STABLE SUSPENSION OF SAID FINELY DIVIDED PARTICLES WITHOUT THICKENING SAID COMPOSITION TO AN EXTENT SUCH THAT IT IS NOT POURABLE, SAID FINELY DIVIDED PARTICLES HAVING CRYSTALLIZED IN SITU IN THE WATER IN THE PRESENCE OF SAID COLLOIDALLY DISPERSED CLAY.
Claim 2
Dependent Claim
138 words
A HIGHLY CONCENTRATED HOMOGENEOUS STABLE AND FLOWABLE AQUEOUS PLANT FOOD COMPOSITION COMPRISING WATER, AT LEAST ONE PRIMARY PLANT NUTRIENT CRYSTALLINE MATERIAL SELECTED FROM THE GROUP CONSISTING OF UREA, AMMONIUM NITRATE, AMMONIUM PHOSPHATE AND POTASSIUM NITRATE IN AMOUNT IN EXCESS OF ITS SOLUBILITY IN SAID WATER WHEREBY FINELY DIVIDED CRYSTALLINE PARTICLES OF SAID PRIMARY PLANT FOOD MATERIAL ARE PRESENT IN SAID WATER AND COLLOIDAL ATTAPULGITE CLAY DISPERSED IN SAID WATER, SAID CLAY BEING PRESENT IN AMOUNT OF AT LEAST 1/4% OF THE WEIGHT OF SAID COMPOSITION ON A VOLATILE FREE DAY WEIGHT BASIS, AND IN AMOUNT SUFFICIENT TO FORM A STABLE SUSPENSION OF SAID FINELY DIVIDED PARTICLES WITHOUT THICKENING SAID COMPOSITION TO AN EXTENT SUCH THAT IT IS NOT POURABLE, SAID FINELY DIVIDED PARTICLES HAVING CRYSTALLIZED IN SITU IN THE WATER IN THE PRESENCE OF SAID COLLOIDALLY DISPERSED CLAY.
References Cited (Backward Citations)
US1228361A
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US2324079A
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US2773757A
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US2971292A
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US3041159A
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US3062637A
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |