Patent US3224867A successfully refreshed from Google Patents.
US3224867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating and conditioning soil with a heat reaction product of starch granules and an alkali metal phosphate
Assignee: Cerestar USA Inc
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Filing: 1962-06-29
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Granted: 1965-12-21
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert L Milloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:56
CPC Classifications
C; C05; C05B; C05B15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD OF TREATING AND CONDITIONING SOIL CONSISTING ESSENTIALLY OF APPLYING TO THE SOIL A HEAT REACTION PRODUCT OF STARCH GRANULES AND AN ALKALI METAL PHOSPHATE SALT, SAID REACTION PRODUCT BEING FORMED BY MIXING STARCH GRANULES WITH AN AQUEOUS SOLUTION OF THE PHOSPHATE SALT TO CAUSE THE GRANULES TO ABSORB SOME OF THE SOLUTION, THEN SEPARATING THE STARCH GRANULES FROM ANY EXCESS PHOSPHATE SALT SOLUTION WHICH HAS NOT BEEN ABSORBED BY THE STARCH GRANULES, AND THEN ROASTING THE SEPARATED STARCH GRANULES CONTAINING THE ABSORBED PHOSPHATE SALT AT TEMPERATURES FROM ABOUT 120* C. TO ABOUT 175* C.
Claim 2
Independent Claim
96 words
A METHOD OF TREATING AND CONDITIONING SOIL CONSISTING ESSENTIALLY OF APPLYING TO THE SOIL A HEAT REACTION PRODUCT OF STARCH GRANULES AND AN ALKALI METAL PHOSPHATE SALT, SAID REACTION PRODUCT BEING FORMED BY MIXING STARCH GRANULES WITH AN AQUEOUS SOLUTION OF THE PHOSPHATE SALT TO CAUSE THE GRANULES TO ABSORB SOME OF THE SOLUTION, THEN SEPARATING THE STARCH GRANULES FROM ANY EXCESS PHOSPHATE SALT SOLUTION WHICH HAS NOT BEEN ABSORBED BY THE STARCH GRANULES, AND THEN ROASTING THE SEPARATED STARCH GRANULES CONTAINING THE ABSORBED PHOSPHATE SALT AT TEMPERATURES FROM ABOUT 120* C. TO ABOUT 175* C.
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |