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Yasuo Hatate
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Kogoshima, JP
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last 30 patents
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Patent Grant
Porous particles, porous hollow particles and method of preparing s...
Patent number
5,990,183
Issue date
Nov 23, 1999
Reika Kogyo Kabushiki Kaisha
Yoshinobu Kawano
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE