Inventor

ISHIDA MASAKO

JP4 patents

Patents

4 patents

US4924137AMay 8, 1990

Cathode for electron tube

MITSUBISHI ELECTRIC CORP30 citations92

US4797593AJan 10, 1989

Cathode for electron tube

MITSUBISHI ELECTRIC CORP47 citations91

US5122707AJun 16, 1992

Cathode in a cathode ray tube

MITSUBISHI ELECTRIC CORP16 citations72

US4897574AJan 30, 1990

Hot cathode in wire form

MITSUBISHI ELECTRIC CORP5 citations61