Patent US4413031A successfully refreshed from Google Patents.
US4413031A
Expired / Lapsed
US
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Multi-layer plate of lignocellulose-containing particles provided with at least one binder
Assignee: Bison Werke Baehre and Greten GmbH and Co KG
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Filing: 1981-09-14
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Granted: 1983-11-01
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Expires: 2001-09-14
Abstract
Abstract Plate having several layers of a pressed fleece, whose outer cover layers are of preferably lignocellulose-containing slender oriented particles mixed with at least one binder material. At least in a region of the cover layer facing away from the center layer, the length of the slender particles increases with their distance from the center layer. The region may include the entire cover layer. The slender, shorter particles are homogeneously arranged in the intermediate between the region of the cover layer.
Inventors
- 👤 Klaus Poppelreuter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:45
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/10; B27N3/14; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/25; Y10T428/253; Y10T442/00; Y10T442/50; Y10T442/57
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
57 words
Plate having several layers of a pressed fleece, said fleece having two outer cover layers of preferably lignocellulose-containing slender oriented particles mixed with at least one binder material, at least in a region of the cover layer facing away from the center layer the length of the slender particles increasing with their distance from the center layer.
Claim 2
Dependent Claim
57 words
Plate having several layers of a pressed fleece, said fleece having two outer cover layers of preferably lignocellulose-containing slender oriented particles mixed with at least one binder material, at least in a region of the cover layer facing away from the center layer the length of the slender particles increasing with their distance from the center layer.
Claim 3
Dependent Claim
13 words
Plate according to claim 1, wherein said region includes the entire cover layer.
Claim 4
Dependent Claim
23 words
Plate according to claim 1, wherein slender, shorter particles are homogeneously arranged in an intermediate region between said region of the cover layer.
References Cited (Backward Citations)
US4127636A
Cited
US4299877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |