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US4844010A
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Absorbent composition, method of making and using same
Assignee: PERSONAL PET PRODUCTS PARTNERSHIP (ALSO KNOWN AS PERSONAL PET PRODUCTS)
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Filing: 1987-10-02
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Granted: 1989-07-04
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Expires: 2007-10-02
Abstract
Abstract An absorbent composition is disclosed which is particularly useful as an improved animal or pet litter composition, or as an absorbent for aqueous systems or oleophilic materials such as petroleum or vegetable oils and the like. Also disclosed is a method of making the improved absorbent composition and litter composition containing same. The absorbent composition is comprised of clay and cylodextrin as a nitrogenous compound absorber.
Inventors
- 👤 Cyril L. Ducharme
- 👤 Ralph C. Eickhof
- 👤 David A. Heider
- 👤 Denny W. Neiberger
- 👤 Fred Maass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:27
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0154; A01K1/0155
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
24 words
In an absorbent composition comprised of clay as an absorbent material the improvement wherein said absorbent composition contains cyclodextrin as a nitrogenous compound absorber.
Claim 2
Dependent Claim
24 words
In an absorbent composition comprised of clay as an absorbent material the improvement wherein said absorbent composition contains cyclodextrin as a nitrogenous compound absorber.
Claim 3
Dependent Claim
23 words
An absorbent composition as defined in claim 1 wherein said cyclodextrin is present in an amount of about 0.05 to 2% by weight.
Claim 4
Dependent Claim
24 words
An absorbent composition as defined in claim 1 wherein said cyclodextrin is present in an amount of about 0.05 to about 0.5% by weight.
Claim 5
Dependent Claim
18 words
An absorbent composition as defined in claim 3 wherein said cyclodextrin is present in about 0.1% by weight.
Claim 6
Dependent Claim
21 words
An absorbent composition as defined in claim 4 wherein said cyclodextrin contains up to a 10% by weight load of fragrance.
Claim 7
Dependent Claim
23 words
An absorbent composition as defined in claim 1 in which said clay comprises at least 90% by weight of the total absorbent composition.
Claim 8
Dependent Claim
21 words
An absorbent composition as defined in claim 6 in which said clay comprises about 99% by weight of the absorbent composition.
Claim 9
Dependent Claim
24 words
An absorbent composition as defined in claim 1 in which said cyclodextrin is coated on the clay and adhered thereto with an adhesive binder.
Claim 10
Independent Claim
39 words
A method of preparing an absorbent composition useful as an animal litter having improved odor properties comprising adding to a clay absorbent material cyclodextrin as a nitrogenous compound absorber in an amount of between 0.05 to 2% by weight.
Claim 11
Independent Claim
39 words
A method of preparing an absorbent composition useful as an animal litter having improved odor properties comprising adding to a clay absorbent material cyclodextrin as a nitrogenous compound absorber in an amount of between 0.05 to 2% by weight.
Claim 12
Dependent Claim
26 words
A method as defined in claim 9 wherein an adhesive binder is applied to said clay in liquid form prior to the addition of said cyclodextrin.
Claim 13
Dependent Claim
59 words
A method as defined in claim 10 wherein said adhesive binder is applied in the form of an aqueous solution sprayed on clay particles having a particle size in the range of about 2 to about 7 mm and said cyclodextrin is applied in the form of a dry powder which adheres to the clay through said adhesive binder.
Claim 14
Dependent Claim
20 words
A method as defined in claim 11 wherein said cyclodextrin is applied in an amount of about 0.1% by weight.
Claim 15
Dependent Claim
16 words
A method as defined in claim 12 in which said cyclodextrin carries an aromatic volatile fragrance.
Claim 16
Dependent Claim
58 words
A method as defined in claim 9 in which said cyclodextrin is added to a mud of said clay and mixed with said clay mud so as to incorporate the cyclodextrin internally after which said mixture of clay and cyclodextrin is dried and ground to a particle size in the range of about 2 to about 7 mm.
Claim 17
Dependent Claim
27 words
A method as defined in claim 14 in which said cyclodextrin is added to said clay in an amount of about 0.05 to about 0.5% by weight.
Claim 18
Dependent Claim
21 words
A method as defined in claim 15 in which said cyclodextrin is added in an amount of about 0.1% by weight.
Claim 19
Dependent Claim
20 words
A method as defined in claim 9, wherein a dry cyclodextrin is added and mixed with a substantially dry clay.
Claim 20
Dependent Claim
21 words
A method as defined in claim 9, wherein an aqueous dispersion of said cyclodextrin is applied to a substantially dry clay.
Claim 21
Dependent Claim
17 words
A method as defined in claim 18 wherein said aqueous dispersion of cyclodextrin is applied by spraying.
Claim 22
Dependent Claim
38 words
An animal having improved odor properties comprising an absorbent composition comprised of clay and cyclodextrin as a nitrogenous compound absorber, said absorbent composition having a particle size in the range of about 2 mm to about 7 mm.
Claim 23
Dependent Claim
38 words
An animal having improved odor properties comprising an absorbent composition comprised of clay and cyclodextrin as a nitrogenous compound absorber, said absorbent composition having a particle size in the range of about 2 mm to about 7 mm.
Claim 24
Dependent Claim
25 words
An animal litter as defined in claim 20 in which said cyclodextrin is present in an amount of about 0.05 to about 2% by weight.
Claim 25
Dependent Claim
22 words
An animal litter as defined in claim 20 in which said cyclodextrin is present in an amount of about 0.1% by weight.
Claim 26
Dependent Claim
17 words
An animal litter as defined in claim 20 in which said cyclodextrin carries an aromatic volatile fragrance.
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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |