Patent US4409925A successfully refreshed from Google Patents.
US4409925A
Expired / Lapsed
US
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Absorbent material
Assignee: JAMUR HOLDINGS Ltd
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Filing: 1981-11-02
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Granted: 1983-10-18
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Expires: 2001-11-02
Abstract
Abstract An absorbent material suitable for a wide variety of uses and having the ability to absorb, selectively, water, animal waste, oil, grease and chemicals is based on ground paper. Plaster of Paris is usually present along with one or a combination of other components, dependent on the end use of the product. The product may be provided in a fibrous form or in a granular form. The granular form of the product is produced by dry mixing the components and granulating the dry mixture using droplets of water.
Inventors
- 👤 Ewart Brundrett
- 👤 Franklin T. Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:52
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0154; A01K1/0155; B; B01; B01J; B01J20/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
57 words
A granular absorbent material having a density of about 2 to about 20 lb/cu.ft., comprising ground paper, Plaster of Paris and at least one other component in the weight ratio 1:0.01:0.01 to about 1:2:1 which has been granulated utilizing water droplets, said other component being selected from the group consisting of sand, fertilizer, colorants, oil and deodorants.
Claim 2
Dependent Claim
57 words
A granular absorbent material having a density of about 2 to about 20 lb/cu.ft., comprising ground paper, Plaster of Paris and at least one other component in the weight ratio 1:0.01:0.01 to about 1:2:1 which has been granulated utilizing water droplets, said other component being selected from the group consisting of sand, fertilizer, colorants, oil and deodorants.
Claim 3
Dependent Claim
16 words
The product of claim 1 having a moisture content of less than about 20 weight percent.
Claim 4
Dependent Claim
14 words
The product of claim 1 having a density of about 10 to 20 lb/cu.ft.
Claim 5
Dependent Claim
50 words
A granular absorbent material useful as an animal box absorbent, comprising ground paper, Plaster of Paris and deodorant in the weight ratio of 1:0.01:0.01 to 1:0.7:trace granulated with water droplets, having a moisture content of less than about 20 wt.% and having a density of about 10 to 13 lbs/cu.ft.
Claim 6
Dependent Claim
50 words
A granular absorbent material useful as an animal box absorbent, comprising ground paper, Plaster of Paris and deodorant in the weight ratio of 1:0.01:0.01 to 1:0.7:trace granulated with water droplets, having a moisture content of less than about 20 wt.% and having a density of about 10 to 13 lbs/cu.ft.
Claim 7
Dependent Claim
11 words
The product of claim 1, 2 or 4 which is biodegradable.
Claim 8
Dependent Claim
23 words
An absorbent material comprising ground paper in fibrous form, Plaster of Paris and oil mixed in the weight ratio of 1:0.01:trace to 1:2:1.
Claim 9
Dependent Claim
23 words
An absorbent material comprising ground paper in fibrous form, Plaster of Paris and oil mixed in the weight ratio of 1:0.01:trace to 1:2:1.
Claim 10
Independent Claim
94 words
A method for the manufacture of a granular lightweight absorbent material, which comprises dry mixing ground paper, Plaster of Paris and at least one additional component in the weight ratio of 1:0.01:0.01 to about 1:2:1 to form a homogeneous mixture, spray applying water droplets of diameter from about 0.1 to about 5 mm to the homogeneous mixture in a weight ratio of water to mixture of about 0.5:1 to about 2:1, mixing said water and mixture to form discrete particles, and drying the particles to a moisture content of less than about 20 wt.%.
Claim 11
Independent Claim
94 words
A method for the manufacture of a granular lightweight absorbent material, which comprises dry mixing ground paper, Plaster of Paris and at least one additional component in the weight ratio of 1:0.01:0.01 to about 1:2:1 to form a homogeneous mixture, spray applying water droplets of diameter from about 0.1 to about 5 mm to the homogeneous mixture in a weight ratio of water to mixture of about 0.5:1 to about 2:1, mixing said water and mixture to form discrete particles, and drying the particles to a moisture content of less than about 20 wt.%.
Claim 12
Dependent Claim
19 words
The method of claim 7 wherein said water is utilized in a weight ratio of about 1.0 to 1.
Claim 13
Dependent Claim
20 words
The method of claim 7 or 8 wherein said water droplets have a diameter of about 1 to 2 mm.
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) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |