Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2008-04-01
2008-04-01
Johnson, Edward M. (Department: 1793)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C423S628000
Reexamination Certificate
active
09830907
ABSTRACT:
This invention is directed to star shaped alumina extrudates with a pore volume in the pores of a diameter over 1000 nm, as determined by mercury porosity, of at least 0.05 ml/g and a total pore volume between 0.5-0.75 ml/g. The extrudates have a length of between 2-8 mm, a length to diameter ratio of between 1-3, a side crushing strength of at least 50 N and a bulk crushing strength of at least 1 MPa.
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Bayense Cornelis Roeland
Ykema Durk
Engelhard Corporation
Johnson Edward M.
Weingarten Schurgin, Gagnebin & Lebovici LLP
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