Patent US2779670A successfully refreshed from Google Patents.
US2779670A
Expired / Lapsed
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Soil conditioning and fertilizing compounds and methods of manufacture
Assignee: Combined Minerals Inc
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Filing: 1952-10-27
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Granted: 1957-01-29
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Expires: 1972-10-27
Abstract
No abstract record available.
Inventors
- 👤 Burkett Albert Le Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:13
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF MANUFACTURING A SOIL CONDITIONING COMPOUND COMPRISING: EXPANDING PERLITE UNDER THE INFLUENCE OF HEAT; DISCHARGING THE EXPANDED PERLITE INTO AN AQUEOUS SOLUTION; ADDING INORGANIC SALT CONTAINING NITROGEN, POTASH, AND PHOSPHATE TO SAID SOLUTION; AGITATING THE SOLUTION; DISCHARGING THE SOLIDS FROM SAID SOLUTION TO A DRYER; DRYING THE SOLID SUFFICIENTLY TO CAUSE THE SALTS OF THE SOLUTION TO PRECIPITATE UPON AND TO ADHERE TO THE SURFACES AND IN THE INTERSTICES OF THE PERLITE PA RTICLES; DISCHARGING THE PERLITE WITH THE ADHERING DRIES SALTS TO A MIXER; ADDING ORGANIC SOIL CONDITIONING INGREDIENTS TO SAID MIXER; MIXIMG THE PERTILE WITH THE ADHERING DRIED SALTS WITH THE ORGANIC
Claim 2
Independent Claim
106 words
A METHOD OF MANUFACTURING A SOIL CONDITIONING COMPOUND COMPRISING: EXPANDING PERLITE UNDER THE INFLUENCE OF HEAT; DISCHARGING THE EXPANDED PERLITE INTO AN AQUEOUS SOLUTION; ADDING INORGANIC SALT CONTAINING NITROGEN, POTASH, AND PHOSPHATE TO SAID SOLUTION; AGITATING THE SOLUTION; DISCHARGING THE SOLIDS FROM SAID SOLUTION TO A DRYER; DRYING THE SOLID SUFFICIENTLY TO CAUSE THE SALTS OF THE SOLUTION TO PRECIPITATE UPON AND TO ADHERE TO THE SURFACES AND IN THE INTERSTICES OF THE PERLITE PA RTICLES; DISCHARGING THE PERLITE WITH THE ADHERING DRIES SALTS TO A MIXER; ADDING ORGANIC SOIL CONDITIONING INGREDIENTS TO SAID MIXER; MIXIMG THE PERTILE WITH THE ADHERING DRIED SALTS WITH THE ORGANIC
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |