Tokyo Ohka Kogyo Co. Ltd.

08/01/1997

Tokyo Ohka Kogyo Co. Ltd. (TOK) has completed a new photoresist production facility at its Hillsboro, OR, plant. Until now, TOK has manufactured its photoresists only in Japan and exported to US customers, while subsidiary OHKA America Inc. produced developer liquids for US semiconductor customers. The new 21,000-ft2 facility is an integrated manufacturing plant that produces i-line photoresists from raw materials. The expansion increases TOK`s production of photoresist by 10%.