Coated chromium dioxide particles
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United States of America Patent
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-
Apr 28, 1987
Grant Date -
N/A
app pub date -
Mar 18, 1986
filing date -
Mar 18, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Chromium dioxide has favorable magnetic properties which make it desirable as a solid support in heterogeneous immunoassays. However, to be useful in such assays it must be protected against hydrolytic degradation. This invention provides magnetic particles useful in immunoassays having a core of CrO.sub.2 which has a reduced surface, the core coated with silica and further coated with a silane.
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