US2498480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing fertilizer concentrate
Assignee: Individual
•
Filing: 1945-05-19
•
Granted: 1950-02-21
•
Expires: 1965-05-19
Abstract
No abstract record available.
Inventors
- 👤 Bierlich Knud George
- 👤 Whiteley Edward Oldroyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:55
CPC Classifications
C; C05; C05D; C05D9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF PREPARING A FERTILIZER CONCENTRATE WHICH COMPRISES IMMERSING CELLULOSE REFUSE CONTAINING GUMS AND RESINS IN A SOLUTION OF A SAPONIFYING AGENT ASSOCIATED WITH FINELY DIVIDED BENTONITE CLAY IN AQUEOUS SUSPENSION AT ORDINARY TEMPERATURES TO FORM A SLURRY OF THE MIXTURE, THEN WASHING THE PRODUCT TO REMOVE THE RESULTING AQUEOUS SOAPY MIXTURE, DRYING THE RESIDUE AND THEREAFTER IMPREGNATING SAID RESIDUE UNDER SUPER ATMOSPHERIC PRESSURE WITH A SOLUTION OF FERTILIZER AND FINALLY DRYING THE PRODUCT.
Claim 2
Independent Claim
75 words
A METHOD OF PREPARING A FERTILIZER CONCENTRATE WHICH COMPRISES IMMERSING CELLULOSE REFUSE CONTAINING GUMS AND RESINS IN A SOLUTION OF A SAPONIFYING AGENT ASSOCIATED WITH FINELY DIVIDED BENTONITE CLAY IN AQUEOUS SUSPENSION AT ORDINARY TEMPERATURES TO FORM A SLURRY OF THE MIXTURE, THEN WASHING THE PRODUCT TO REMOVE THE RESULTING AQUEOUS SOAPY MIXTURE, DRYING THE RESIDUE AND THEREAFTER IMPREGNATING SAID RESIDUE UNDER SUPER ATMOSPHERIC PRESSURE WITH A SOLUTION OF FERTILIZER AND FINALLY DRYING THE PRODUCT.
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Cited
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Cited
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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) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |