TOKYO (Dow Jones)--Elpida Memory Inc. (6665) said Friday it will issue on April 20 new shares and convertible bonds worth about Y18.7 billion to Kingston Technology Co. of the U.S., as the Japanese memory chip maker aims to strengthen ties with its biggest client that sells memory modules. TOKYO (Dow Jones)--Kobe Steel Ltd. (5406) said Friday it will invest Y100 billion to build a steel plant in V