US3747564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing animal litter
Assignee: United States Department of Agriculture
•
Filing: 1971-11-17
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Granted: 1973-07-24
•
Expires: 1991-11-17
Abstract
Abstract Animal litter of improved quality is prepared from leafy green vegetable material by a procedure which includes removal of precursors of offensive odor-causing elements. The material is washed, compressed and dehydrated, and contains a sufficient amount of ammonia to preserve a given ph level. The material may also contain an active quantity of chlorophyll and be suitably colored.
Inventors
- 👤 E Bickoff
- 👤 G Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:25
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0155
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
15 words
The process of claim 1 wherein the leafy green vegetative material is fresh green alfalfa.
Claim 2
Dependent Claim
98 words
A process for converting alfalfa into animal litter which is essentially free from the characteristic odor of dehydrated alfalfa, which process comprises -a. mixing a sufficient amount of ammonia into the vegetative material to preserve a given ph level, b. pressing fresh green alfalfa to remove the juice and to obtain a press-cake of fibrous material, c. agitating the press-cake with added water for a sufficient period of time to break up the press-cake and mixing the resulting particles with the water, d. pressing the resulting wet mass to remove occluded water, and e. dehydrating the resulting press-cake.
Claim 3
Dependent Claim
13 words
The process of claim 3 wherein the dehydrated material is compressed into pellets.
Claim 4
Dependent Claim
30 words
The process of claim 3 wherein, prior to dehydration, the press-cake from step (d) is re-agitated with added water and the resulting wet mass is re-pressed to remove occluded water.
Claim 5
Dependent Claim
85 words
A composition for use as an animal litter comprising a particulate, compressed, washed, and dehydrated, chlorophyll-containing leafy vegetative material characterized by the properties of readily absorbing liquids, having a color suitable for masking animal wastes deposited in the litter, including a sufficient active quantity of chlorophyll therein to suppress and destroy odors emanating from said wastes, and also including a sufficient quantity of ammonia to preserve a given ph level, said washed composition being essentially free from the characteristic odor of dehydrated leafy vegetative material.
Claim 6
Dependent Claim
11 words
The composition of claim 6 wherein the vegetative material is alfalfa.
Claim 7
Dependent Claim
16 words
The composition of claim 6 which has the additional characteristic of being essentially free from sugars.
References Cited (Backward Citations)
US2014900A
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US2126809A
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US2179591A
Cited
US2597457A
Cited
US2649759A
Cited
US3059615A
Cited
US3286691A
Cited
US3425397A
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |