Patent US4532890A successfully refreshed from Google Patents.
US4532890A
Expired / Lapsed
US
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Pet litter
Assignee: Nippon Pet Food Co Ltd
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Filing: 1984-03-27
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Granted: 1985-08-06
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Expires: 2004-03-27
Abstract
Abstract A pet litter formed by pelletizing a mixture of a chopped paper material and a material having a high content of chlorophyll.
Inventors
- 👤 Tomio Ohki
- 👤 Toshio Yoshioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:27
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0155
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A process for the preparation of a pet litter, which process comprises adding to a chopped paper material for mixing, water and a ground product or pellets with a high content of chlorophyll selected from the group consisting of alfalfa grass, stems and leaves of ipil ipil niseacacia, and Spirulina scenedesmus in an amount of from 1 to 70% by weight based on the amount of the chopped paper material, pelletizing the resulting mixture and drying the resulting molded product.
Claim 2
Dependent Claim
80 words
A process for the preparation of a pet litter, which process comprises adding to a chopped paper material for mixing, water and a ground product or pellets with a high content of chlorophyll selected from the group consisting of alfalfa grass, stems and leaves of ipil ipil niseacacia, and Spirulina scenedesmus in an amount of from 1 to 70% by weight based on the amount of the chopped paper material, pelletizing the resulting mixture and drying the resulting molded product.
Claim 3
Dependent Claim
50 words
The process as claimed in claim 1, wherein water is added thereto in an amount of from 0.1 to 1.2 times by weight based on the amount of the mixture of the chopped paper material with the ground product or pellets of the material having a high content of chlorophyll.
Claim 4
Dependent Claim
20 words
The process as claimed in claim 1, wherein the resulting mixture is molded by extrusion into a pelletized, molded product.
Claim 5
Dependent Claim
102 words
A process for the preparation of a pet litter, which process comprises adding to a chopped paper material for mixing, water and a ground product or pellets with a high content of chlorophyll selected from the group consisting of alfalfa grass, stems and leaves of ipil ipil niseacacia, and Spirulina scenedesmus in an amount of from 1 to 70% by weight based on the amount of the chopped paper material, and a sizing agent selected from the group consisting of sodium alginate, sodium polyacrylate, carrageenan, guar gum, acrylamide of starch and carboxymethylcellusose, pelletizing the resulting mixture and drying the resulting molded product.
Claim 6
Dependent Claim
102 words
A process for the preparation of a pet litter, which process comprises adding to a chopped paper material for mixing, water and a ground product or pellets with a high content of chlorophyll selected from the group consisting of alfalfa grass, stems and leaves of ipil ipil niseacacia, and Spirulina scenedesmus in an amount of from 1 to 70% by weight based on the amount of the chopped paper material, and a sizing agent selected from the group consisting of sodium alginate, sodium polyacrylate, carrageenan, guar gum, acrylamide of starch and carboxymethylcellusose, pelletizing the resulting mixture and drying the resulting molded product.
Claim 7
Dependent Claim
51 words
The process as claimed in claim 4, wherein water is added to the chopped paper material in an amount of from 1.0 to 1.2 times by weight based on the amount of the mixture of said chopped paper material with the ground product or pellets with a high content of chlorophyll.
Claim 8
Dependent Claim
20 words
The process as claimed in claim 4, wherein the resulting mixture is molded by extrusion in a pelletized, molded product.
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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |