Patent US3565744A successfully refreshed from Google Patents.
US3565744A
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US
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Extruded polymeric sheet material
Assignee: Individual
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Filing: 1967-12-29
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Granted: 1971-02-23
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Expires: 1987-12-29
Abstract
Abstract D R A W I N G AN EXTRUDED SHEET MATERIAL IS COMPOSED OF LAMELLAE OF A STRONG POLYMERIC MATERIAL THAT EXTEND THROUGH THE BODY OF THE SHEET AND AT LEAST AT ONE END ARE FUSED TOGETHER IN OVERLAPPING RELATIONSHIP TO FORM A SKIN. A LESS STRONG, PREFERABLY FOAMED MATERIAL MAY BE PROVIDED IN THE CAVITIES BETWEEN THE LAMELLAE OF THE SKIN TO OBTAIN DESIRED PROPERTIES. THE SHEET IS MADE BY EXTRUDING A MULTITUDE OF INTERSPERSED FLOWS OF DIFFERENT CROSS-SECTION OF THE TWO MATERIALS THROUGH ROTATING DIE PARTS.
Inventors
- 👤 Ole-Bendt Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:48
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/25; B29C48/30; B29C48/32; B29C48/33; B29C67/00; B29C67/0003; B29C70/00; B29C70/02; B29C70/021; B29C70/025; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29C70/14; B32; B32B; B32B27/00; B29C48/001; B29C48/0018; B29C48/0022; B29C48/022; B29C48/05; B29K; B29K2025/00; B29K2105/00; B29K2105/04; B29K2105/06; B29K2105/16; B29K2223/00; B29K2223/04; B29K2223/06; B29K2995/00; B29K2995/0037; B29K2995/0041; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/249993; Y10T428/29; Y10T428/2904; Y10T428/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |