Sony Corporation

Mitsui Toatsu Chemicals, Incorporated

Masayoshi Okabe

Atsuhiko Hiai

Seiya Iguchi

Naotoshi Seki

Yasuto Iwai

A process for the liquid phase oxidation of an organic substance-containing effluent which comprises subjecting said effluent to a liquid phase oxidation treatment in the presence of a copper catalyst at a copper ion concentration of 50-5000 ppm and also in presence of an ammonium ion concentration of five or more times the copper ion concentration thereby to oxidize the organic substances in the effluent, and recovering the copper catalyst from the treated effluent for reuse. The recovery of the copper catalyst may be effected either by a process in which the copper catalyst is separated as a precipitate or by a process using a resin adsorption.

Process for the liquid phase oxidation of organic substance-containing

A phase switching device using a novel four terminal semiconductor device having a generally V-shaped emitter grounded current amplification characteristic or factor. The device is biased to a low point on the characteristic curve and a rectangular switching signal is added to the bias to cause the operating point on the curve to shift about the low point. An input signal is then superimposed on the resulting rectangular switching signal, the input signal having a higher frequency than the switching signal and being phase shifted each time the switching signal reverses polarity.

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Tokyo, Japan

Masayoshi Okabe