Inventor
YATA KIYOSHI
JP5 patents
Patents
5 patentsUS5235641AAug 10, 1993
File encryption method and file cryptographic system
HITACHI LTD259 citations97
US5261065ANov 9, 1993
Input/output processing method in a database management system
HITACHI LTD24 citations89
US4641277AFeb 3, 1987
System for detecting access to storage
HITACHI LTD8 citations72
US4628451ADec 9, 1986
Data processing apparatus for virtual memory system
HITACHI LTD15 citations72
US4521872AJun 4, 1985
Instruction storage
HITACHI LTD11 citations72