US3113015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of densely adhering layers of a powder agent on the surface of granulated and crystallized fertilizers
Assignee: Chemische Fabrik Kalk GmbH
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Filing: 1959-11-30
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Granted: 1963-12-03
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Expires: 1979-11-30
Abstract
No abstract record available.
Inventors
- 👤 Fritz W Brandt
- 👤 Dolde Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:25
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
115 words
PROCESS FOR THE PRODUCTION OF DENSELY AND STRONGLY ADHERING LAYERS OF POWDER AGENTS ON THE SURFACE OF GRANULAR FERTILIZERS, WHICH COMPRISES INCORPORATING A HYGROSCOPIC SALT SELECTED FROM THE GROUP CONSISTING OF NITRATES AND CHLORIDES OF CALCIUM AND MAGNESIUM, AND MIXTURES THEREOF INTO A POWDER AGENT COMPOSED OF INERT MOISTURE ABSORPTIVE MATERIAL, SELECTED FROM THE GROUP CONSISTING OF KIESELGUHR, FULLER''S EARTH, FLUE DUST, QUICK ASH, GROUND SLATE, AND MIXTURES THEREOF ON THE SURFACE OF A HYGROSCOPIC GRANULAR NITROGEN-PHOSPHOROUS-POTASSIUM FERTILIZER MATERIAL IN THE PRESENCE OF WATER, SAID WATER BEING USED IN AN AMOUNT SUFFICIENT TO FORM A CONCENTRATED HYGROSCOPIC SALT SOLUTION IN WHICH SAID SALT IS PRESENT IN AN AMOUNT OF FROM 40 TO 50% BY WEIGHT.
Claim 2
Dependent Claim
115 words
PROCESS FOR THE PRODUCTION OF DENSELY AND STRONGLY ADHERING LAYERS OF POWDER AGENTS ON THE SURFACE OF GRANULAR FERTILIZERS, WHICH COMPRISES INCORPORATING A HYGROSCOPIC SALT SELECTED FROM THE GROUP CONSISTING OF NITRATES AND CHLORIDES OF CALCIUM AND MAGNESIUM, AND MIXTURES THEREOF INTO A POWDER AGENT COMPOSED OF INERT MOISTURE ABSORPTIVE MATERIAL, SELECTED FROM THE GROUP CONSISTING OF KIESELGUHR, FULLER''S EARTH, FLUE DUST, QUICK ASH, GROUND SLATE, AND MIXTURES THEREOF ON THE SURFACE OF A HYGROSCOPIC GRANULAR NITROGEN-PHOSPHOROUS-POTASSIUM FERTILIZER MATERIAL IN THE PRESENCE OF WATER, SAID WATER BEING USED IN AN AMOUNT SUFFICIENT TO FORM A CONCENTRATED HYGROSCOPIC SALT SOLUTION IN WHICH SAID SALT IS PRESENT IN AN AMOUNT OF FROM 40 TO 50% BY WEIGHT.
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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |