US3711934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing metal foil/graphite fiber/epoxy resin laminates
Assignee: Monsanto Co
•
Filing: 1970-09-17
•
Granted: 1973-01-23
•
Expires: 1990-09-17
Abstract
Abstract Novel metallic foil/graphite fiber/epoxy laminates with compound curvature are fabricated through a unique fabrication process which includes the steps of preparing the laminate in the prepreg stage with the metallic foil layers overlapping the graphite layers, clamping the overlapped portion of the foil layers and pulling the laminate down over a mandrel of desired compound curvature, and curing the resulting curved laminate.
Inventors
- 👤 C Zorowski
- 👤 J Calfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:27
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/06; B64C1/12; B29; B29C; B29C51/00; B29C51/14; B29C70/00; B29C70/04; B29K; B29K2307/00; B64C2001/0054; B64C2001/0081; Y; Y02; Y02T; Y02T50/00; Y02T50/40; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861; Y10T29/49863
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
The process of claim 1 wherein the epoxy resin content is greater than about 40 volume percent.
Claim 2
Dependent Claim
15 words
The process of claim 2 wherein the epoxy resin content is about 60 volume percent.
References Cited (Backward Citations)
US2845699A
Cited
US3052021A
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US2949667A
Cited
US3004324A
Cited
US3200026A
Cited
US3480501A
Cited
US3655472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |