US3050385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow release fertilizers and their manufacture
Assignee: Phillips Petroleum Co
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Filing: 1960-07-25
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Granted: 1962-08-21
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Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 Harry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:49
CPC Classifications
C; C05; C05G; C05G5/00; C05G5/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE PROCESS FOR THE PRODUCTION OF A NEW FERTILIZER COMPOSITION COMPRISING THE STEPS OF: COMMINUTING AN OIL SHALE; ADMIXING WITH SAID OIL SHALE A WATER SOLUBLE SYNTHETIC FERTILIZER MATERIAL SELECTED FROM THE GROUP CONSISTING OF INORGANIC SALTS OF NITROGEN, PHOPHOROUS, AND POTASSIUM; HEATING THE RESULTING ADMIXTURE IN THE RANGE BETWEEN 250-650*F., AND PRESSING THE HEATED ADMIXTURE IN THE RANGE OF 500-5000 P.S.I. IN A PELLET MOLDING ZONE TO FORM A PELLETED FERTILIZER COMPOSITION CONSISTING ESSENTIALLY OF BETWEEN 90 AND 10 WEIGHT PERCENT OF SAID OIL SHALE, AND THE REMAINDER CONSISTING ESSENTIALLY OF BETWEEN 10 AND 90 WEIGHT PERCENT OF SAID FERTILIZER MATERIAL.
Claim 2
Dependent Claim
102 words
THE PROCESS FOR THE PRODUCTION OF A NEW FERTILIZER COMPOSITION COMPRISING THE STEPS OF: COMMINUTING AN OIL SHALE; ADMIXING WITH SAID OIL SHALE A WATER SOLUBLE SYNTHETIC FERTILIZER MATERIAL SELECTED FROM THE GROUP CONSISTING OF INORGANIC SALTS OF NITROGEN, PHOPHOROUS, AND POTASSIUM; HEATING THE RESULTING ADMIXTURE IN THE RANGE BETWEEN 250-650*F., AND PRESSING THE HEATED ADMIXTURE IN THE RANGE OF 500-5000 P.S.I. IN A PELLET MOLDING ZONE TO FORM A PELLETED FERTILIZER COMPOSITION CONSISTING ESSENTIALLY OF BETWEEN 90 AND 10 WEIGHT PERCENT OF SAID OIL SHALE, AND THE REMAINDER CONSISTING ESSENTIALLY OF BETWEEN 10 AND 90 WEIGHT PERCENT OF SAID FERTILIZER MATERIAL.
References Cited (Backward Citations)
US2911295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |