US3758370A
Copy Number
Expired / Lapsed
US
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And products resulting therefrom method for manufacturing a multi ply board of thermoplastic material
Assignee: Gunze Kobunshi KK
•
Filing: 1971-05-07
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Granted: 1973-09-11
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Expires: 1991-05-07
Overview & Biblio
Claims (0)
Citations (0)
Maintenance Schedule (3)
Categories & Tags (0)
Abstract
Abstract A MULTI-PLY THERMOPLASTIC BOARD IS MANUFACTURED BY STEPS COMPRISING PRODUCING TWO FLAT STRIPS OF A THERMOPLASTIC MATERIAL, EACH OF SAID STRIPS HAVING ON AT LEAST ONE SIDE THEREOF A RIBBED SURFACE WHICH IS FORMED WITH A PLURALITY OF SPACED RIBS, THE RIBS ON ONE STRIP BEING ANGULARLY DEVIATING FROM THE RIBS ON ANOTHER STRIP, EXTRUDING A TUBING OF SAID THERMOPLASTIC MATERIALS, FORMING ON AT LEAST ONE SIDE THEREOF A RIBBED PERIPHERAL SURFACE WITH A PLURALITY OF SPACED PARALLEL RIBS EXTENDING SUBSTANTIALLY IN PARALLEL TO AN AXIS OF SAID TUBE, DRAWING THE STRIPS WITH THE RIBBED SURFACE THEREOF FACING EACH OTHER, HEATING TOPS OF SAID RIBS TO THE FUSED CONDITION, AND COMBINING THE STRIPS TOGETHER THROUGH FUSION OF THE FACING TOP OF THE RIBS.
Inventors
👤 M Sukarai
👤 K Muto
👤 N Sugimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:39
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C66/438; B29C37/00; B29C37/0078; B29C37/0082; B29C43/00; B29C43/22; B29C43/30; B29C43/305; B29C44/00; B29C44/20; B29C44/32; B29C44/326; B29C48/00; B29C48/001; B29C48/0013; B29C48/0015; B29C48/03; B29C48/07; B29C48/09; B29C48/10; B29C48/12; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/32; B29C48/335; B29C48/36; B29C48/50; B29C48/695; B29C48/88; B29C48/90; B29C48/901; B29C48/908; B29C48/911; B29C48/9135; B29C48/915; B29C48/9155; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C66/003; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/72; B29C66/725; B29C66/7252; B29C66/727; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/83421; B29C66/83423; E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; B29C48/0019; B29C48/0022; B29C48/08; B29C48/13; B29C48/345; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29K; B29K2995/00; B29K2995/0037; B29K2995/0072; B29L; B29L2007/00; B29L2009/00; B29L2023/00; B29L2023/003; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1067; Y10T156/1084; Y10T156/1087; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249982; Y10T428/249984
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Annuity Stage
Window Opens
Payment Deadline
Surcharge Period Until
Estimated Fee
Status
3.5 Years (Year 4) 1976-09-10
1977-03-12 1977-09-11
$2000.00
Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-10
1981-03-12 1981-09-11
$3760.00
Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-10
1985-03-12 1985-09-11
$7700.00
Window Closed / Lapsed