US4494481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Animal litter composition
Assignee: Procter and Gamble Co
•
Filing: 1982-11-12
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Granted: 1985-01-22
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Expires: 2002-11-12
Abstract
Abstract Solid absorbent materials, having adsorbed thereto from about 50 ppm to about 3000 ppm of a soluble salt of a transition metal of Group Ib or Group IIb of the periodic table of the elements, when used as animal litter products, effectively prevent the development of urine odors.
Inventors
- 👤 Pedro A. Rodriguez
- 👤 James B. Edwards
- 👤 Fred M. Habermehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:46
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/01; A01; A01K; A01K1/00; A01K1/015; A01K1/0152
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
41 words
A solid absorbent material useful as an animal litter, having adsorbed thereto from about 50 ppm to about 3000 ppm of a soluble salt of a transition metal of Group Ib or Group IIb of the periodic table of the elements.
Claim 2
Dependent Claim
41 words
A solid absorbent material useful as an animal litter, having adsorbed thereto from about 50 ppm to about 3000 ppm of a soluble salt of a transition metal of Group Ib or Group IIb of the periodic table of the elements.
Claim 3
Dependent Claim
27 words
The solid absorbent material of claim 1 which has adsorbed thereto from about 50 ppm to about 500 ppm of a soluble salt of silver or mercury.
Claim 4
Dependent Claim
27 words
The solid absorbent material of claim 2 which has adsorbed thereto from about 100 ppm to about 300 ppm of a soluble salt of silver or mercury.
Claim 5
Dependent Claim
14 words
The solid absorbent material of claim 2 wherein the soluble salt is silver nitrate.
Claim 6
Dependent Claim
14 words
The solid absorbent material of claim 2 wherein the soluble salt is mercury chloride.
Claim 7
Dependent Claim
28 words
The solid absorbent material of claim 1 which has adsorbed thereto from about 1500 ppm to about 3000 ppm of a soluble salt of copper, zinc, or cadmium.
Claim 8
Dependent Claim
28 words
The solid absorbent material of claim 6 which has adsorbed thereto from about 1800 ppm to about 2500 ppm of a soluble salt of copper, zinc, or cadmium.
Claim 9
Dependent Claim
14 words
The solid absorbent material of claim 6 wherein the soluble salt is copper sulfate.
Claim 10
Dependent Claim
14 words
The solid absorbent material of claim 6 wherein the soluble salt is zinc sulfate.
Claim 11
Dependent Claim
42 words
An absorbent clay material useful as an animal litter, which has adsorbed thereto from about 50 ppm to about 3000 ppm of a soluble salt of a transition metal of group Ib or group IIb of the periodic table of the elements.
Claim 12
Dependent Claim
42 words
An absorbent clay material useful as an animal litter, which has adsorbed thereto from about 50 ppm to about 3000 ppm of a soluble salt of a transition metal of group Ib or group IIb of the periodic table of the elements.
Claim 13
Independent Claim
97 words
A method for preparing an animal litter product from a solid absorbent material, comprising the steps of: (a) dissolving from about 50 ppm to about 3000 ppm by weight of the solid absorbent material of a soluble salt of a transition metal of group Ib or group IIb of the periodic table of the elements in water; (b) soaking the solid absorbent material in the aqueous transition metal salt solution; and (c) drying the solid absorbent material, provided that the transition metal salt is not fixed to the absorbent material by calcination or converted to its oxide.
Claim 14
Independent Claim
97 words
A method for preparing an animal litter product from a solid absorbent material, comprising the steps of: (a) dissolving from about 50 ppm to about 3000 ppm by weight of the solid absorbent material of a soluble salt of a transition metal of group Ib or group IIb of the periodic table of the elements in water; (b) soaking the solid absorbent material in the aqueous transition metal salt solution; and (c) drying the solid absorbent material, provided that the transition metal salt is not fixed to the absorbent material by calcination or converted to its oxide.
Claim 15
Dependent Claim
15 words
The method as described in claim 11, wherein the solid absorbent material is a clay.
Claim 16
Dependent Claim
18 words
The method as described in claim 11, wherein the soluble transition metal salt is a soluble silver salt.
Claim 17
Dependent Claim
27 words
The method of claim 13, wherein the amount of silver salt is from about 50 ppm to about 500 ppm by weight of the solid absorbent material.
Claim 18
Dependent Claim
21 words
The method of claim 14, wherein the amount of soluble silver salt is from about 100 ppm to about 300 ppm.
Claim 19
Dependent Claim
16 words
The method of claim 11, wherein the soluble transition metal salt is a soluble zinc salt.
Claim 20
Dependent Claim
28 words
The method of claim 16, wherein the amount of soluble zinc salt is from about 1500 ppm to about 3000 ppm by weight of the solid absorbent material.
Claim 21
Dependent Claim
28 words
The method of claim 16, wherein the amount of soluble zinc salt is from about 1800 ppm to about 2500 ppm by weight of the solid absorbent material.
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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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |