Inventor
OOYAMA MITSUO
JP12 patents
Patents
12 patentsUS6094647AJul 25, 2000
Presearch type document search method and apparatus
HITACHI LTD66 citations96
US5519857AMay 21, 1996
Hierarchical presearch type text search method and apparatus and magnetic disk unit used in the apparatus
HITACHI LTD59 citations96
US5168533ADec 1, 1992
Hierarchical presearch type text search method and apparatus and magnetic disk unit used in the apparatus
HITACHI LTD37 citations96
US4820928AApr 11, 1989
Lithography apparatus
HITACHI LTD33 citations90
US4626838ADec 2, 1986
Filled shaped generating apparatus
HITACHI LTD36 citations90
US4692579ASep 8, 1987
Electron beam lithography apparatus
HITACHI LTD21 citations81
US5903442AMay 11, 1999
Hard disk drive and hard disk apparatus having bus and its installing method
HITACHI LTD15 citations74
US4943729AJul 24, 1990
Electron beam lithography system
HITACHI LTD15 citations73
US4829444AMay 9, 1989
Charged particle beam lithography system
HITACHI LTD9 citations73
US4758973AJul 19, 1988
Apparatus for processing floating-point data having exponents of a variable length
HITACHI LTD7 citations72
US4580236AApr 1, 1986
Graphic display apparatus with a vector generating circuit
HITACHI LTD15 citations71
US6043988AMar 28, 2000
Hard disk drive and hard disk apparatus having bus and its installing method
HITACHI LTD2 citations63