Patent US4570573A successfully refreshed from Google Patents.
US4570573A
Expired / Lapsed
US
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Composition useful as a cat litter, plant mulch, or grease and oil absorbent
Assignee: FANGMAN ALFRED E
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Filing: 1984-10-18
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Granted: 1986-02-18
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Expires: 2004-10-18
Abstract
Abstract A cat litter composition, which is absorbent, odorless, trackless and biodegradable, comprising about 60-94% by weight absorbent, about 1-35% by weight gypsum, and about 3-12% by weight water. The composition is pelletized so that it may easily be disposed of by flushing it down the toilet. This is particularly desirable when the composition is used as a cat litter.
Inventors
- 👤 Donald J. Lohman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:43
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/52; A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0154; A01K1/0155; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
33 words
A composition which is useful as a cat litter comprising about 60-94% by weight paper as an absorbent, about 1-35% by weight gypsum as a neutralizing agent, and about 3-12% by weight water.
Claim 2
Dependent Claim
33 words
A composition which is useful as a cat litter comprising about 60-94% by weight paper as an absorbent, about 1-35% by weight gypsum as a neutralizing agent, and about 3-12% by weight water.
Claim 3
Dependent Claim
21 words
The composition of claim 1, wherein said paper comprises about 80-94% by weight and said gypsum comprises about 1-7% by weight.
Claim 4
Independent Claim
39 words
A method of making a cat litter composition comprising: a. mixing shredded or powdered paper with 3-12% by weight water and 1-35% by weight gypsum until substantial uniformity is achieved, and b. pelletizing the mixed paper, gypsum and water.
Claim 5
Independent Claim
39 words
A method of making a cat litter composition comprising: a. mixing shredded or powdered paper with 3-12% by weight water and 1-35% by weight gypsum until substantial uniformity is achieved, and b. pelletizing the mixed paper, gypsum and water.
Claim 6
Dependent Claim
18 words
The method of claim 3, wherein the water includes sufficient soap to maintain the pellets in pelletized form.
Claim 7
Dependent Claim
30 words
A composition useful as a cat litter comprising about 60-90% absorbent comprising one or more of clay and paper, about 1-35% by weight gypsum and about 3-12% by weight water.
Claim 8
Dependent Claim
30 words
A composition useful as a cat litter comprising about 60-90% absorbent comprising one or more of clay and paper, about 1-35% by weight gypsum and about 3-12% by weight water.
Claim 9
Dependent Claim
10 words
The composition of claim 5, wherein the absorbent is clay.
Claim 10
Dependent Claim
12 words
The composition of claim 5, wherein the absorbent is clay and paper.
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) | 1989-02-17 | 1989-08-19 | 1990-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-17 | 1993-08-19 | 1994-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-17 | 1997-08-19 | 1998-02-18 | $7700.00 | Window Closed / Lapsed |