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Herbert Giesche
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Kl.-Winternheim, DE
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last 30 patents
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Patent Grant
Spherical SIO.sub.2 particles
Patent number
4,911,903
Issue date
Mar 27, 1990
Merck Patent Gesellschaft mit beschrankter Haftung
Klaus Unger
B82 - NANO-TECHNOLOGY
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Patent Grant
Spherical SiO.sub.2 particles
Patent number
4,775,520
Issue date
Oct 4, 1988
Merck Patent Gesellschaft mit beschrankter Haftung
Klaus Unger
B82 - NANO-TECHNOLOGY