US3676566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminar structures of polyimide and fluorocarbon polymers
Assignee: EIDP Inc
•
Filing: 1967-08-18
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Granted: 1972-07-11
•
Expires: 1987-08-18
Abstract
Abstract Laminar structures, electrical conductors therewith and the like composed of polyimide film, fluoropolymer film and thin metal sheet.
Inventors
- 👤 Richard T Mcbride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:23
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/306; H01B3/308; H01B3/44; H01B3/443; H01B3/445; H01B9/00; H01B9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
An electrical conductor according to claim 1 including a second wrapping of said laminated tape over said first wrapping thereof.
Claim 2
Dependent Claim
89 words
A five-layer bonded laminated structure, adapted for shielding insulation for cables, wherein each layer is 0.25 to 10 mils thick, the layers in turn being (1) a member selected from the group consisting of aluminum and copper foil, (2) a copolymer of 95-50 percent by weigHt of tetrafluoroethylene and 5%-50% by weight of hexafluoropropylene, (3) a polyimide polymer, (4) a copolymer of 95-50 percent by weight of tetrafluoroethylene and 5-50 percent by weight of hexafluoropropylene, and (5) a member selected from the group consisting of aluminum and copper foil.
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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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |