Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2007-11-13
2007-11-13
Bos, Steven (Department: 1754)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C502S415000, C502S439000
Reexamination Certificate
active
11055651
ABSTRACT:
A high-strength α-alumina formed body with a low soda content, of which pore distribution is controlled, can be provided in an easy and inexpensive manner. The α-alumina formed body can be produced by a method comprising calcining a gibbsite-phase aluminum hydroxide to obtain rehydratable alumina powder; forming the rehydratable alumina powder in the presence of water to obtain a formed body; maintaining the formed body in the presence of water at about 110-200° C., to rehydrate the formed body; and calcining the rehydrated formed body at about 1200° C. or higher. The α-alumina formed body is useful as a carrier for catalysts, chemicals, microbes for food leftover disposal and the like.
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Kawazu Hidekatsu
Tsuchimoto Kazuya
Yamanishi Osamu
Bos Steven
Sughrue Mion Pllc.
Sumitomo Chemical Company Limited
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