Inventor
MORITSU TOSHIYUKI
JP4 patents
Patents
4 patentsUS7305558B1Dec 4, 2007
Digital signing method
HITACHI LTD38 citations91
US6947911B1Sep 20, 2005
Method for making contract and system for processing contract
HITACHI LTD41 citations89
US6674917B1Jan 6, 2004
Method of synthesizing an image for any light source position and apparatus therefor
HITACHI LTD17 citations80
US7770009B2Aug 3, 2010
Digital signing method
HITACHI LTD6 citations72