US3607387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant polyimide-coated conductor having a linear polyimide layer covered by an aromatic polyamide
Assignee: Raychem Corp
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Filing: 1968-09-18
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Granted: 1971-09-21
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Expires: 1988-09-18
Abstract
Abstract Laminates primarily for electrical insulation comprise at least one lamina of a thermoplastic polyimide, e.g., poly(1, 12dodecamethylene pyromellitimide) and a covering lamina of an infusible or high-melting polymer, especially an aromatic polyimide. An insulated airframe wire is described in detail.
Inventors
- 👤 Vincent L Lanza
- 👤 Edward C Stivers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:30
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; B; B32; B32B; B32B27/00; C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; H01B3/303; H01B3/306; H01B3/307; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/298; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
21 words
An insulated wire, the insulation comprising two coats of poly(1,12-dodecamethylene pyromellitimide) underlying at least two coats of an infusible aromatic polyimide.
Claim 2
Dependent Claim
17 words
An insulated wire as claimed in claim 2 having an additional outermost coat comprising pigmented poly(1,12-dodecamethylene Pyromellitimide).
Claim 3
Dependent Claim
15 words
A wire as claimed in claim 3, wherein the aromatic polyimide is poly(4,4''-phenyl ether pyromellitimide).
Claim 4
Dependent Claim
27 words
An insulated wire, the insulation comprising at least two coats consisting essentially of poly(1,12-dodecamethylene pyromellitimide) underlying at least two coats consisting essentially of poly(4,4'' -phenyl ether pyromellitimide).
Claim 5
Dependent Claim
15 words
An insulated electrical conductor as claimed in claim 1, wherein the inside coat is cross-linked.
Claim 6
Dependent Claim
37 words
An insulated electrical component, the insulation of which comprises an inside coat of a thermoplastic polyimide selected from the group consisting of poly (1,12-dodecamethylene pyromellitimide) and poly(1,13-tridecamethylene pyromellitimide) and an outside coat of an infusible aromatic polyimide.
Claim 7
Dependent Claim
22 words
An insulated electrical component as claimed in claIm 7 as having an additional outermost coat comprising a pigmented coat of poly(1,12-dodecamethylene pyromellitimide).
Claim 8
Dependent Claim
17 words
An insulated electrical component as claimed in claim 7, wherein the inside coat is an extruded coat.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |