US3707434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigidified resinous laminate
Assignee: JPI PLUMBING PRODUCTS Inc A MI CORP
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Filing: 1970-11-30
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Granted: 1972-12-26
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Expires: 1990-11-30
Abstract
Abstract RIGIDFIELD PASTIC LAMINATE HAVING GENERAL UTILITY AS A SANDWICH PANEL, INCLUDING AN OUTER SHEET OF AN ACRYLIC RESIN, A LAYER OF POLYESTER RESIN BONDED TO THE ACRYLIC SHEET, THE LAYER CONTAINING GLASS FIBERS AND SOLID INERT SPHERES DISTRIBUTED THERETHROUGH, WITH A CO-MINGLED LAYER OF A POLYESTER RESIN BONDED TO THE FIRST LAYER, THE SECOND LAYER BEING A SYNTACTIC LAYER OF A POLYESTER RESIN CONTAINING HOLLOW PLASTIC SPHERES IN A STRESSED CONDITION.
Inventors
- 👤 Vance A Stayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:30
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/065; B32B27/18; B32B27/30; B32B27/36; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/101; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0264; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249972; Y10T428/249986; Y10T428/25; Y10T428/252; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |