Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1990-11-06
1993-06-08
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
252 6254, 252 6256, 252 6259, 252 6263, 252 6264, 428403, 428404, 428407, 428412, 428421, 428422, 4284251, 4284255, 4284259, 428480, 428483, 428510, 428532, 428694BA, B32B 516, B32B 1502, B32B 1902, B32B 2102
Patent
active
052178048
ABSTRACT:
Magnetic particles are cobalt surface treated gamma iron oxide (Fe.sub.2 O.sub.3) having a specific area of at least 30 m.sup.2 /g and a powder coercivity greater than about 450 Oe, the particles being coated with from about 10 to about 50% by weight of a material having a refractive index less than about the refractive index of a binder for the particles.
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Bertucci Sidney J.
James Robert O.
Oltean George L.
Eastman Kodak Company
Gerlach Robert A.
Nakarani D. S.
Thibodeau Paul J.
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