Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2008-05-20
2008-05-20
Le, H. T (Department: 1794)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C423S624000
Reexamination Certificate
active
07374743
ABSTRACT:
Mixed oxide powder containing indium and tin, with a proportion of indium oxide of between 90 and 98 wt. % and a BET surface area of 40 to 120 m2/g, which is in the form of aggregates having an average circumference of less than 500 nm, consists of at least 95% of an indium oxide phase and displays an oxygen content that is lower than the content that theoretically results from In2O3 and SnO2. It is produced by mixing a solution of an indium compound with a solution of a tin compound, atomising this mixture of solutions, pyrolysing the atomised mixture of solutions in a first zone of a reactor and in a second zone of the reactor, following pyrolysis, adding reducing gases to the pyrolysed mixture at one or more points in a quantity such that overall a reducing atmosphere is established in this second zone, and separating the resulting solid from the waste gases in a further, third zone, in which a reducing atmosphere likewise still prevails. It can be used for the production of transparent, electroconductive paints and coatings.
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Gutsch Andreas
Hasskerl Thomas
Katusic Stipan
Kress Peter
Michael Guenther
Degussa - AG
Le H. T
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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