US3575762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of laminating an extruded thermoplastic film to a preheated thin metal foil web
Assignee: Primerica Inc
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Filing: 1969-09-23
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Granted: 1971-04-20
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Expires: 1989-09-23
Abstract
Abstract A METHOD OF ADHERING A MOLTEN, SYNTHETIC, THERMOPLASTIC, FILM-FORMING, POLYMERIC MATERIAL TO A METAL FOIL WEB IN A CONTINUOUS WEB PROCESS TO FOMR A LAMINATE. IN ORDER TO ELIMINATE WRINKLING OF THE THIN METAL FOIL WHEN IT IS HEATED TO THE EXTRUSION TEMPERATURE, THE FOIL, IN ITS ORIGINAL CORD IS PREHEATED AND THEN MAINTAINED AT APPROXIMATELY THE EXTRUSTION TEMPERATURE THROUGHOUT THE LAMINATING PROCESS.
Inventors
- 👤 Clifford Clayton Goehring
- 👤 Arthur C Hart Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/14; B32B37/15; B32B37/153; B32B15/00; B32B15/04; B32B15/08; B32B38/00; B32B38/0008; B32B38/0036; B32B37/10; B32B2037/1063; B32B2305/00; B32B2305/80; B32B2309/00; B32B2309/02; B32B2309/08; B32B2309/10; B32B2309/105; B32B2310/00; B32B2310/021; B32B2310/025; B32B2310/04; B32B2310/0445; B32B2310/0463; B32B2310/0481; B32B2311/00; B32B2323/00; B32B2323/04; B32B37/0007; B32B37/0015; B32B37/16; B32B37/20; B32B37/203
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |