Inventor
OHKI MASAYUKI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “OHKI MASAYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
22 patentsUS6000607ADec 14, 1999
IC card reader/writer and method of operation thereof
HITACHI LTD110 citations98
US5952639ASep 14, 1999
Depositing, withdrawal, balance check, exchange and transfer of electronic money in automatic cash handling machine
HITACHI LTD252 citations98
US5945652AAug 31, 1999
Electronic wallet and method for operating the same
HITACHI LTD137 citations98
USD555185SNov 13, 2007
Video projector
HITACHI LTD66 citations97
US6016954AJan 25, 2000
Card holder-type balance reader
HITACHI LTD199 citations97
US5895903AApr 20, 1999
Terminal for portable IC card
HITACHI LTD84 citations96
USD585035SJan 20, 2009
Television receiver
HITACHI LTD17 citations92
USD575811SAug 26, 2008
Video projector
HITACHI LTD32 citations92
US5929427AJul 27, 1999
Portable card reader/writer
HITACHI LTD50 citations92
USD600661SSep 22, 2009
Television receiver
HITACHI LTD18 citations91
US6339638B1Jan 15, 2002
Telephone used for electronic money card transaction and method of operation of the same
HITACHI LTD28 citations91
USD437851SFeb 20, 2001
IC card reader and writer
HITACHI LTD20 citations89
USD423471SApr 25, 2000
IC card reader and writer
HITACHI LTD10 citations74
US6016957AJan 25, 2000
IC card reader/writer and method of operation thereof
HITACHI LTD14 citations74
USD446799SAug 21, 2001
Video camera with digital video disc player
HITACHI LTD10 citations73
USD393835SApr 28, 1998
Smart card reader/writer
HITACHI LTD11 citations73
USD393527SApr 14, 1998
Electronic value automated teller machine
HITACHI LTD8 citations73
USD393277SApr 7, 1998
Electronic value processing device
HITACHI LTD6 citations73
US6042002AMar 28, 2000
Holding apparatus for a plurality of IC cards facilitating transactions of electronic money among the IC cards
HITACHI LTD6 citations63
USD409229SMay 4, 1999
Electronic wallet
HITACHI LTD2 citations63
USD408438SApr 20, 1999
Electronic wallet
HITACHI LTD5 citations63
USD409214SMay 4, 1999
Video camera with combined video tape recorder
HITACHI LTD0 citations52