Wafer-level Packaging Portfolio LLC

Sumitomo Chemical Company, Limited

Hidefumi Yamamoto

Juergen Leib

Hideo Hirohara

Emiko Kawano

Hisao Yamaguchi

Mamoru Hattori

The present invention relates to the field of electronic devices and their associated driver and/or controller integrated circuits and in particular to the mechanical packaging of electronic devices and to the packaging of electronic devices and their associated driver and/or controller integrated circuits.

Method for packaging electronic devices and integrated circuits

Effective disinfection and washing of immobilized lactase from Aspergillus oryzae is carried out after a period of hydrolyzing lactose by treatment of the immobilized lactase with aqueous solutions of pH's 2 to 4 and 6 to 8.7, one or both of which contain a disinfectant. The solution having a pH of 6 to 8.7 may be a phosphate buffered solution. The lactase may be immobilized on a high polymer compound by covalent linkage. The immobilized lactase has outstanding resistance to chemicals and wide pH stability so that decrease of lactase activity is minimized.

Method for disinfecting and washing of immobilized lactase

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Takatsuki, Japan

Hidefumi Yamamoto