G - Physics – 11 – B
Patent
G - Physics
11
B
31/121, 6/210, 1
G11B 5/62 (2006.01) C09C 1/24 (2006.01) C09C 3/06 (2006.01)
Patent
CA 1186885
Abstract of The Disclosure Iron oxide particles containing at least 5% by weight of iron (II) content calculated as FeO are stabilized against atmospheric oxidation by a coating of at least one compound containing boron and those particles are useful as coloring pigments and magnetic particles in magnetic re- cording media.
424454
Biermann Hans-Peter
Heine Heinrich
Kohler Peter
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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