Patent US2597457A successfully refreshed from Google Patents.
US2597457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poultry litter material
Assignee: Allied Minerals Inc
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Filing: 1950-03-08
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Granted: 1952-05-20
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Expires: 1970-03-08
Abstract
No abstract record available.
Inventors
- 👤 Errol F Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:10
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0155; A01K1/0154
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN IMPROVED POULTRY LITTER OF THE "BUILTUP" TYPE CONSISTING ESSENTIALLY OF A PLURALITY OF LAYERS OF FIBROUS MATERIAL SUPERIMPOSED ONE ABOVE ANOTHER, EACH OF SAID LAYERS HAVING INCORPORATE IN BETWEEN AND ON THE CONSTITUENT FIBERS THEREOF FINELY DIVIDED CACO3, THE SAID CACO3 OCCURRING IN A STATE OF SUBDIVISION SUCH THAT FROM 85% TO 99.9% OF A REPRESENTATIVE SAMPLE WILL PASS THROUGH A 325-MESH SCREEN AND SUBSTANTIALLY ALL OF THE SCREENED PRODUCT IS BELOW 50 MICRON PARTICLES SIZE.
Claim 2
Dependent Claim
77 words
AN IMPROVED POULTRY LITTER OF THE "BUILTUP" TYPE CONSISTING ESSENTIALLY OF A PLURALITY OF LAYERS OF FIBROUS MATERIAL SUPERIMPOSED ONE ABOVE ANOTHER, EACH OF SAID LAYERS HAVING INCORPORATE IN BETWEEN AND ON THE CONSTITUENT FIBERS THEREOF FINELY DIVIDED CACO3, THE SAID CACO3 OCCURRING IN A STATE OF SUBDIVISION SUCH THAT FROM 85% TO 99.9% OF A REPRESENTATIVE SAMPLE WILL PASS THROUGH A 325-MESH SCREEN AND SUBSTANTIALLY ALL OF THE SCREENED PRODUCT IS BELOW 50 MICRON PARTICLES SIZE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |