Inventor

OKUBO HIIZU

JP8 patents

Patents

8 patents

US5012448AApr 30, 1991

Sense amplifier for a ROM having a multilevel memory cell

RICOH KK77 citations95

US5029135AJul 2, 1991

Semiconductor memory apparatus with internal synchronization

RICOH KK67 citations94

US5495444AFeb 27, 1996

Semiconductor memory device used as a digital buffer and reading and writing method thereof

RICOH KK28 citations92

US5291453AMar 1, 1994

Serial memory apparatus having units for presetting reading bit lines to a given voltage

RICOH KK24 citations92

US5285069AFeb 8, 1994

Array of field effect transistors of different threshold voltages in same semiconductor integrated circuit

RICOH KK37 citations87

US5740108AApr 14, 1998

Series-structured read-only memory having word lines arranged independently for each row of a memory cell array

RICOH KK13 citations72

US5737273AApr 7, 1998

Sense amplifier and reading circuit with sense amplifier

RICOH KK11 citations72

US5729499AMar 17, 1998

Sense amplifier and reading circuit with sense amplifier

RICOH KK9 citations72