Inventor
MATSUKI TAKESHI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “MATSUKI TAKESHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
11 patentsUS5315634AMay 24, 1994
Automatic trading method and apparatus
HITACHI LTD270 citations99
US7224820B2May 29, 2007
Electronic document, genuineness management method for print medium thereof, genuineness management system, program, and program recording medium
HITACHI LTD85 citations96
US7526645B2Apr 28, 2009
Electronic document authenticity assurance method and electronic document disclosure system
HITACHI LTD31 citations92
US7210043B2Apr 24, 2007
Trusted computer system
HITACHI LTD21 citations92
US7200682B2Apr 3, 2007
Time stamp generating system
HITACHI LTD21 citations92
US7134021B2Nov 7, 2006
Method and system for recovering the validity of cryptographically signed digital data
HITACHI LTD16 citations92
US6816969B2Nov 9, 2004
Digital signature generating method and digital signature verifying method
HITACHI LTD41 citations91
US7694126B2Apr 6, 2010
Method and system for recovering the validity of cryptographically signed digital data
HITACHI LTD7 citations73
US4229675AOct 21, 1980
Color picture tube with internal funnel shaped magnetic shield
HITACHI LTD19 citations70
US7131776B2Nov 7, 2006
Printed matter reliability decision method
HITACHI LTD5 citations61
US7270261B2Sep 18, 2007
Print management system
HITACHI LTD3 citations60