Inventor

KAWAKAMI HAKUHEI

4 patents

Patents

4 patents

US4143388AMar 6, 1979

Mos type semiconductor device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD36 citations90

US6493282B2Dec 10, 2002

Semiconductor integrated circuit

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations82

US4098071AJul 4, 1978

Time signal clock

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations72

US4176518ADec 4, 1979

Electronic clock having audible time indication

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations61