US3756905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filamentary plastic composite laminate
Assignee: Northrop Grumman Corp
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Filing: 1971-12-20
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Granted: 1973-09-04
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Expires: 1991-12-20
Abstract
Abstract A PLASTIC LAMINATE IS FORMED FROM LAYERS OF COMPOSITE MATERIAL MADE FROM FILAMENTS WHICH HAVE BEEN IMPREGNATED WITH A PLASTIC BINDER. A SUBSTANTIAL IMPROVEMENT IN THE STRUCTURAL CHARACTERISTICS OF THE LAMINATE IS ACHIEVED BY ALTERNATING FILAMENT RICH LAYERS OF COMPOSITE MATERIAL WITH RESIN RICH LAYERS OF COMPOSITE MATERIAL IN FORMING THE LAMINATE STRUCTURE.
Inventors
- 👤 G Mills
- 👤 G Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:02
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B32B27/28; B32B27/281; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/103; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249947
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |