US2895873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic animal litter and method for making the same
Assignee: Minerals & Chemicals Corp Of A
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Filing: 1957-09-20
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Granted: 1959-07-21
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Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Edgar W Sawyer
- 👤 Wright W Gary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:27
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0154; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/36; C01B33/38; C01B33/40; C01B33/42; C01B33/46; C01F; C01F7/00; C01F7/68; C01F7/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN ANIMAL LITTER COMPRISING A GRANULAR SORPTIVE ESSENTIALLY NON-COLLOIDAL CLAY MINERAL HAVING AN ALUMINUM CONTENT, CALCULATED AS AL2O3, OF AT LEAST ABOUT 5 PERCENT BASED ON THE VOLATILE FREE WEIGHT OF SAID MINERAL, IN WHICH AT LEAST A PORTION OF THE ALUMINUM THEREIN EXISTS AS THE SULFATE SALT FORMED IN SITU BY THE REACTION OF SAID MINERAL WITH SULFURIC ACID, SAID LITTER BEING CHARACTERIZED BY BEING ESSENTIALLY DEVOID OF FREE ACID.
Claim 2
Dependent Claim
71 words
AN ANIMAL LITTER COMPRISING A GRANULAR SORPTIVE ESSENTIALLY NON-COLLOIDAL CLAY MINERAL HAVING AN ALUMINUM CONTENT, CALCULATED AS AL2O3, OF AT LEAST ABOUT 5 PERCENT BASED ON THE VOLATILE FREE WEIGHT OF SAID MINERAL, IN WHICH AT LEAST A PORTION OF THE ALUMINUM THEREIN EXISTS AS THE SULFATE SALT FORMED IN SITU BY THE REACTION OF SAID MINERAL WITH SULFURIC ACID, SAID LITTER BEING CHARACTERIZED BY BEING ESSENTIALLY DEVOID OF FREE ACID.
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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |