Patent US4638763A successfully refreshed from Google Patents.
US4638763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Animal litter formulation
Assignee: Individual
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Filing: 1985-04-10
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Granted: 1987-01-27
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Expires: 2005-04-10
Abstract
Abstract Anhydrous sodium sulfate is employed as an additive to animal litters formed from mineral, cellulosic, or chlorophyll-containing base materials. The amount of anhydrous sodium sulfate added is from approximately 0.5 to 4 parts for each 100 parts of the base material of the litter formulation. Additionally, an additive composition can include approximately 1 part citric acid for each 10 parts, by weight, of anhydrous sodium sulfate, approximately 1 part sodium chloride for each part of citric acid, by weight, and smaller amounts of activated carbon granules and germicidal agents.
Inventors
- 👤 Bernard Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:58
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0155; A01K1/0154
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
30 words
In a litter for accumulation of animal feces and urine, the improvement comprising the addition to the base material of the litter of an effective amount of anhydrous sodium sulfate.
Claim 2
Dependent Claim
30 words
In a litter for accumulation of animal feces and urine, the improvement comprising the addition to the base material of the litter of an effective amount of anhydrous sodium sulfate.
Claim 3
Dependent Claim
13 words
The litter composition of claim 1 wherein the base material is a clay.
Claim 4
Dependent Claim
25 words
The litter composition of claim 1 wherein the amount of sodium sulfate added is from 0.5 to 4 parts per 100 parts of base material.
Claim 5
Dependent Claim
25 words
The litter composition of claim 3 wherein the amourt of sodium sulfate is from 2.5 to 3.5 parts per 100 parts of the base material.
Claim 6
Dependent Claim
25 words
The litter composition of claim 1 having, in addition, approximately 1 part of citric acid for each 10 parts, by weight, of anhydrous sodium sulfate.
Claim 7
Dependent Claim
22 words
The composition of claim 4 having, in addition, approximately 1 part of sodium chloride for each part of citric acid, by weight.
Claim 8
Dependent Claim
23 words
The litter composition of claim 1 having, in addition, approximately 2%, by weight, based upon the anhydrous sodium sulfate of activated carbon granules.
Claim 9
Dependent Claim
14 words
The litter composition of claim 1 having small, but effective, amounts of benzalkonium chloride.
Claim 10
Dependent Claim
14 words
The litter composition of claim 1 wherein the base material is a cellulosic material.
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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |