The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1981
Filed:
Jul. 11, 1979
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A process of preparing a conductive tin dioxide powder doped with 0.001-2.0 mole % of antimony oxide by heating a mixture of stannous oxalate and an antimony compound, preferably a halide, to form tin dioxide through thermal decomposition of stannous oxalate and accomplish firing of the formed tin dioxide without causing sintering. Preferably the mixture is prepared by using a solution of an antimony halide, followed by evaporation of the solvent. This process gives a tin dioxide powder low in specific resistance for the dopant concentration, high in whiteness and small in particle size.
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