Patent US4924808A successfully refreshed from Google Patents.
US4924808A
Expired / Lapsed
US
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Litter for small animals
Assignee: Sued Chemie AG
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Filing: 1988-09-19
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Granted: 1990-05-15
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Expires: 2008-09-19
Abstract
Abstract For producing litter for small animals and more especially litter of cats straw is firstly ground to produce powdered straw which is then pressed to form briquettes and the latter are broken down into irregular fragments with dimensions of the order of a few millimeters and which are very well tolerated by the animals, have a high absorbency and easily disposed of.
Inventors
- 👤 Wilhelm Pirotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:31
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0155
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
Litter for small animals, of which at least a major fraction is in the form of ground and pressed straw, such straw material being in the form of irregular fragments of briquettes made from compacted ground straw.
Claim 2
Dependent Claim
37 words
Litter for small animals, of which at least a major fraction is in the form of ground and pressed straw, such straw material being in the form of irregular fragments of briquettes made from compacted ground straw.
Claim 3
Dependent Claim
39 words
A process for the manufacture of litter for small animals comprising the steps of grinding straw to form straw powder and compacting such powdered straw to form briquettes, which are then broken into fragments with an irregular outer surface.
Claim 4
Dependent Claim
39 words
A process for the manufacture of litter for small animals comprising the steps of grinding straw to form straw powder and compacting such powdered straw to form briquettes, which are then broken into fragments with an irregular outer surface.
Claim 5
Dependent Claim
32 words
The process as claimed in claim 2 wherein said powdered straw is formed into elongated straw briquettes, which are crushed by the application of a force acting in the longitudinal direction thereof.
Claim 6
Dependent Claim
21 words
The process as claimed in claim 2 wherein such briquettes of powdered straw produced by pressing are broken up by impact.
Claim 7
Dependent Claim
27 words
The process as claimed in claim 2 wherein the straw is chopped and is dried down to a moisture content of 8 to 14% prior to grinding.
Claim 8
Dependent Claim
43 words
The process as claimed in claim 2 wherein the powdered straw is pressed to form powdered straw briquettes with a diameter between 8 and 15 mm and is then broken down into oblique irregular fragments with a thickness of 1 to 4 mm.
References Cited (Backward Citations)
US4258660A
Cited
US4827871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |