US3736202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite sheets and processes of manufacturing the same
Assignee: Lockheed Martin Corp
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Filing: 1970-01-22
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Granted: 1973-05-29
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Expires: 1990-01-22
Abstract
Abstract A METHOD OF MANUFACTURING COMPOSITE SHEETS FOR STRUCTURAL FABRICATION WHEREIN A LAMINA OF UNPOLYMERIZED RESIN IS HEATED SUFFICIENTLY TO CAUSE IT TO BECOME TACKY, BUT BELOW ITS POLYMERIZATION TEMPERATURE, MONOFILAMENT STRANDS ARE LAYED UP ON THE TACKY LAMINA AND THEREAFTER THE COMPPOSITE SHEET IS HEATED UNDER PRESSURE TO YIELD A POLYMERIZED COMPOSITE IN WHICH THE STRANDS ARE COATED AND BONDED TO THE SHEET.
Inventors
- 👤 V Sorenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:07
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B29; B29C; B29C63/00; B29C63/24; B32B37/00; B32B37/06; B65; B65H; B65H81/00; B65H81/06; B65H81/08
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |