US Patent Application No: 2002/0004,111

Number of patents in Portfolio can not be more than 2000

Hollow glass microspheres and process for their production

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Abstract

A hollow glass microsphere having an average particle size of at most 15 .mu.m based on volume, a maximum particle size of at most 30 .mu.m and an average particle density of from 0.1 to 1.5 g/cm.sup.3, which has a glass composition consisting essentially of the following components by mass %:1 SiO.sub.2 50.0-90.0%, Al.sub.2O.sub.3 10.0-50.0%, B.sub.2O.sub.3 0-12.0%, Na.sub.2O + K.sub.2O + Li.sub.2O 0-1.0%, CaO 0-10.0%, MgO 0-10.0%, BaO + SrO 0-30.0%.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ASAHI GLASS COMPANY, LIMITEDTOKYO1949

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kusaka, Makoto Ichihara, JP 5 94
Matsubara, Toshiya Ichihara, JP 28 186
Nakao, Yasumasa Yokohama, JP 20 314
Tanaka, Masaharu Kitakyushu, JP 75 359
Yamada, Kenji Tokyo, JP 425 2774

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