Patent EP0268924A1 successfully refreshed from Google Patents.
Patent US3169053A successfully refreshed from Google Patents.
US3169053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rendering fertilizer granules non-caking
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1960-07-27
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Granted: 1965-02-09
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Expires: 1980-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Edgar W Sawyer
- 👤 Homer A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:44
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/30; C; C05; C05G; C05G5/00; C05G5/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD FOR TREATING FERTILIZER GRANULES TO PREVENT THE TENDENCY OF SAID GRANULES TO CAKE ON STORAGE IN HUMID ATMOSPHERES WHICH COMPRISES TUMBLING DRY GRANULES OF HYDROSCOPIC FERTILIZER SALT MATRIAL HAVING AN AVAILABLE NITROGEN ANALYSIS OF AT LEAST 10 WITH FROM 1/2 TO 2 PERCENT BY WEIGHT OF KAOLIN CLAY, THE PARTICLES OF WHICH HAD BEEN COATED WITH FROM 1 TO 15 PERCENT BY WEIGHT OF A SODIUM ALKYLARYL SULFONATE HAVING FROM 8 TO 12 CARBON ATOMS IN THE ALKYL GROUP UNTIL SAID COATED CLAY ADHERES TO THE SURFACE OF SAID GRANULES.
Claim 2
Independent Claim
92 words
A METHOD FOR TREATING FERTILIZER GRANULES TO PREVENT THE TENDENCY OF SAID GRANULES TO CAKE ON STORAGE IN HUMID ATMOSPHERES WHICH COMPRISES TUMBLING DRY GRANULES OF HYDROSCOPIC FERTILIZER SALT MATRIAL HAVING AN AVAILABLE NITROGEN ANALYSIS OF AT LEAST 10 WITH FROM 1/2 TO 2 PERCENT BY WEIGHT OF KAOLIN CLAY, THE PARTICLES OF WHICH HAD BEEN COATED WITH FROM 1 TO 15 PERCENT BY WEIGHT OF A SODIUM ALKYLARYL SULFONATE HAVING FROM 8 TO 12 CARBON ATOMS IN THE ALKYL GROUP UNTIL SAID COATED CLAY ADHERES TO THE SURFACE OF SAID GRANULES.
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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |