Inventor
NAKANO TETSUSHI
JP4 patents
Patents
4 patentsUS5740158AApr 14, 1998
ATM communication system
HITACHI LTD24 citations90
US5604729AFeb 18, 1997
ATM communication system having a physical loop form with logical start point and end point
HITACHI LTD14 citations79
US6771854B2Aug 3, 2004
Optical transmission system and optical coupler/branching filter
HITACHI LTD11 citations72
US6563978B2May 13, 2003
Optical transmission system and optical coupler/branching filter
HITACHI LTD8 citations72