US4503284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
RF Suppressing magnet wire
Assignee: Essex Solutions USA LLC
•
Filing: 1983-11-09
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Granted: 1985-03-05
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Expires: 2003-11-09
Abstract
Abstract RF absorbing magnet wire is disclosed made up of an electrical conductor such as copper or aluminum coated with at least one layer of polymeric insulation containing electrically and/or magnetically conductive particles. The wire may be made up of a plurality of insulating layers with the particles in the outermost layer. Such magnet wire will aid in eliminating RF interference where certain RF sensitive components, i.e. microprocessors, radios, etc. may be affected.
Inventors
- 👤 Michael G. Minnick
- 👤 Robert O. Weisz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:40
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/02; H01B9/027; H01B11/00; H01B11/02; H01B11/12; H01B11/14; Y; Y10; Y10S; Y10S174/00; Y10S174/13; Y10S174/26; Y10S174/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
An insulating magnet wire comprising an electrical conductor coated with at least one layer of electrically insulating polyurethane material, said layer overcoated with a semiconductive layer of polyurethane modified nylon containing about 10 percent to about 40 percent by weight of electrically conductive carbon black particles, said semiconductive layer having a volume resistivity of about 0.1 ohm-centimeter to about 1000 ohm-centimeter and capable of suppressing radio frequency signals from about 100 KHz to about 100 MHz.
Claim 2
Dependent Claim
76 words
An insulating magnet wire comprising an electrical conductor coated with at least one layer of electrically insulating polyurethane material, said layer overcoated with a semiconductive layer of polyurethane modified nylon containing about 10 percent to about 40 percent by weight of electrically conductive carbon black particles, said semiconductive layer having a volume resistivity of about 0.1 ohm-centimeter to about 1000 ohm-centimeter and capable of suppressing radio frequency signals from about 100 KHz to about 100 MHz.
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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) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |