Inventor
KAWAMOTO IWAJI
JP3 patents
Patents
3 patentsUS4922993AMay 8, 1990
Method of forming a zinc sleeve on an insulator pin
NGK INSULATORS LTD10 citations71
US5295529AMar 22, 1994
Method of forming zinc collar on insulator metal cap and mold therefor
NGK INSULATORS LTD7 citations69
US5323839AJun 28, 1994
Mold for forming a collar on an external periphery of a metal cap
NGK INSULATORS LTD0 citations48