Sept 29(Reuters) - Kyowa Hakko Kirin Co Ltd
* Says it will sell a part of stake in wholly owned unit Kyowa Medex Co., Ltd., to Hitachi Chemical Company, Ltd.
* Price undetermined
* Says the company will cut stake in Kyowa Medex to 33.4 percent
* Transaction date on Jan. 4, 2018
Source text in Japanese:goo.gl/afA2Wb
Further company coverage: (Beijing Headline News)