Patent US4607594A successfully refreshed from Google Patents.
US4607594A
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Animal litter
Assignee: KRAPS F PAUL TRUSTEE FOR SHARON LYNNE THACKER AND ADAM FRANCIS THACKER
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Filing: 1985-01-11
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Granted: 1986-08-26
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Expires: 2005-01-11
Abstract
Abstract Disclosed is a granular absorbent composition which is ideally suited as an animal litter. Such composition comprises a mixture of absorbent particles (e.g. cellulosic material or clay) and inert adsorptive granules (e.g. volcanic rock) which have been treated with a neutralizing agent (a carbonate, bicarbonate, or hydrogen phosphate).
Inventors
- 👤 Craig E. Thacker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:12
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0155; A01K1/0154
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
80 words
An granular absorbent composition comprising a mixture of: (a) absorbent particles selected from the group consisting of cellulosic material, clay, diatomaceous earth, and mixtures thereof; and (b) inert adsorptive granules selected from the group consisting of porous polymeric granules, man-made glass, volcanic rock, and mixtures thereof, only said adsorptive granules having been treated with a neutralizing agent selected from the group consisting of a carbonate, a bicarbonate, a hydrogen phosphate, and like amphoteric neutralizing agents capable of reacting with urine.
Claim 2
Dependent Claim
80 words
An granular absorbent composition comprising a mixture of: (a) absorbent particles selected from the group consisting of cellulosic material, clay, diatomaceous earth, and mixtures thereof; and (b) inert adsorptive granules selected from the group consisting of porous polymeric granules, man-made glass, volcanic rock, and mixtures thereof, only said adsorptive granules having been treated with a neutralizing agent selected from the group consisting of a carbonate, a bicarbonate, a hydrogen phosphate, and like amphoteric neutralizing agents capable of reacting with urine.
Claim 3
Dependent Claim
18 words
The granular absorbent composition of claim 1 wherein said neutralizing agent is a carbonate, bicarbonate, or hydrogen phosphate.
Claim 4
Dependent Claim
38 words
The granular absorbent composition of claim 1 wherein said cellulosic material is selected from the group consisting of sawdust, wood chips, wood shavings, oat hulls, dried grass, corn cobs, dried fuit peel, nut shells, newspaper, and mixtures thereof.
Claim 5
Dependent Claim
25 words
The granular absorbent composition of claim 1 wherein said clay is selected from the group consisting of bentonite, montmorillonite, kaolin, or attapulgite, and mixtures thereof.
Claim 6
Dependent Claim
15 words
The granular absorbent composition of claim 1 wherein said inert absorptive granules comprise volcanic rock.
Claim 7
Dependent Claim
13 words
The granular absorbent composition of claim 5 wherein said volcanic rock comprises perlite.
Claim 8
Dependent Claim
20 words
The granular absorbent composition of claim 1 wherein said inert adsorptive granules comprise porous polymeric granules or porous glass granules.
Claim 9
Dependent Claim
27 words
The granular absorbent composition of claim 1 which additionally contains an agent selected from the group consisting of a bacteriostat, a fungistat, an odorant, and mixtures thereof.
Claim 10
Dependent Claim
12 words
The granular absorption composition of claim 1 which additionally contains a bacteriostat.
Claim 11
Dependent Claim
66 words
A granular absorbent composition comprising a mixture of: (a) absorbent particles selected from the group consisting of cellulosic material, a clay, a diatomaceous earth, and mixtures thereof; and (b) inert adsorptive granules of volcanic rock, only said absorptive granules having been treated with a neutralizing agent capable of reacting with urine and selected from the group consisting of a carbonate, bicarbonate, hydrogen phosphate, and mixtures thereof.
Claim 12
Dependent Claim
66 words
A granular absorbent composition comprising a mixture of: (a) absorbent particles selected from the group consisting of cellulosic material, a clay, a diatomaceous earth, and mixtures thereof; and (b) inert adsorptive granules of volcanic rock, only said absorptive granules having been treated with a neutralizing agent capable of reacting with urine and selected from the group consisting of a carbonate, bicarbonate, hydrogen phosphate, and mixtures thereof.
Claim 13
Dependent Claim
24 words
The granular absorbent composition of claim 10 wherein said clay is selected from the group consisting of bentonite, montmorillonite, kaolin, attapulgite, and mixtures thereof.
Claim 14
Dependent Claim
13 words
The granular absorbent composition of claim 10 wherein said volcanic rock comprises perlite.
Claim 15
Dependent Claim
17 words
The granular absorbent of claim 10 wherein said absorbent is clay and said volcanic rock is perlite.
Claim 16
Independent Claim
76 words
A method for making a granular absorbent composition which comprises: (a) treating only inert adsorptive granules selected from the group consisting of porous polymeric granules, man-made glass, volcanic rock, and mxtures thereof, with a neutralizing agent selected from the group consisting of a carbonate, bicarbonate, hydrogen phosphate, and mixtures thereof; and (b) admixing said treated adsorptive granules with absorbent particles selected from the group consisting of cellulosic material, a clay, a diatomaceous earth, and mixtures thereof.
Claim 17
Independent Claim
76 words
A method for making a granular absorbent composition which comprises: (a) treating only inert adsorptive granules selected from the group consisting of porous polymeric granules, man-made glass, volcanic rock, and mxtures thereof, with a neutralizing agent selected from the group consisting of a carbonate, bicarbonate, hydrogen phosphate, and mixtures thereof; and (b) admixing said treated adsorptive granules with absorbent particles selected from the group consisting of cellulosic material, a clay, a diatomaceous earth, and mixtures thereof.
Claim 18
Dependent Claim
13 words
The method of claim 14 wherein said inert adsorptive granules comprise volcanic rock.
References Cited (Backward Citations)
US3425397A
Cited
US3675625A
Cited
US3765371A
Cited
US3921581A
Cited
US4341180A
Cited
US4278047A
Cited
US4459368A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
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