Particulate metal oxide
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United States of America Patent
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Mar 17, 2009
Grant Date -
Aug 16, 2007
app pub date -
Apr 13, 2007
filing date -
Jun 26, 2000
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Abstract
A particulate metal oxide having the mean length of the primary particles in the range from 50 to 90 nm, the mean width of the primary particles in the range from 5 to 20 nm, and the median volume particle diameter of the secondary particles is less than 45 nm. The metal oxide can be used in a sunscreen product that exhibits both effective UV protection and improved transparency.
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