Patent US3746604A successfully refreshed from Google Patents.
US3746604A
Expired / Lapsed
US
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Foamed plastic laminate and method of making same
Assignee: Individual
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Filing: 1971-05-21
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Granted: 1973-07-17
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Expires: 1991-05-21
Abstract
Abstract A TECHNIQUE FOR OVERCOMING THE DELAMINATION PROBLEMS ENCOUNTERED DURING THE USE OF LAMINATED STRUCTURES HAVING A FOAMED PLASTIC CORE. THE NATURAL ADHESIVENESS EXISTING BETWEEN OUTER PANEL MEMBERS AND THE FOAMED PLASTIC INNER CORE IS ENHANCED BY ADHESIVELY AFFIXING A THIN, CONTINUOUS, CONVOLUTED RIBBON OF PLASTIC TO THE INTERIOR SURFACES OF THE OUTER PANEL MEMBERS. THE RIBBON IS AFFIXED PRIOR TO THE FOAMING REACTION WHICH PRODUCES THE FOAMED INNER CORE WITH THE RESULT THAT THE CORE MATERIAL BONDS TO THE RIBBON OF PLASTIC AND THE INTERIOR SURFACES OF THE PANEL MEMBERS TO FORM AN INTERLOCKING UNITARY STRUCTURE.
Inventors
- 👤 A Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:31
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/065; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1214; B32B15/00; B32B15/04; B32B15/08; B32B15/20; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; B29L; B29L2009/00; Y; Y10; Y10T; Y10T24/00; Y10T24/27; Y10T24/275; Y10T24/2758; Y10T428/00; Y10T428/249921; Y10T428/249922; Y10T428/249953; Y10T428/24996; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/24999
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |