Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1990-07-03
1992-02-04
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428338, 252513, 342 1, 342 4, 342 5, B32B 516, H01B 102, H01C 0000
Patent
active
050859315
ABSTRACT:
An electromagnetic radiation absorber is formed by dispersing into a dielectric binder acicular magnetic metallic filaments with an average length of about 10 micron or less, diameters of 0.1 micron or more, and aspect (length/diameter) ratios between 10:1 and 50:1. Preferably the average length is about 5 micron, the aspect ratios are between 10:1 and 25:1, and the dielectric binder is polymeric. The volume fraction of the filaments may be lower than 35% of the total and still provide satisfactory absorption. An absorbing paint is formed by dissolving the absorber in a base liquid. The absorber or absorbing paint may be applied to a conductive surface, such as a metallic wire, plate or foil. Impedance matching materials are preferred but not required.
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Borchers Eric J.
Boyer, III Charles E.
Hoyle Charles D.
Kuo Richard J.
Bovee Warren R.
Forrest Peter
Griswold Gary L.
Lesmes George F.
Minnesota Mining and Manufacturing Company
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