P

Inventor

MARU KOICHI

JP4 patents
⚠️ This page may combine multiple inventors who share the name “MARU KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI CABLE

3 patents
US6069990AMay 30, 2000

Optical wavelength multiplexer/demultiplexer

HITACHI CABLE115 citations96
US6549696B1Apr 15, 2003

Optical wavelength multiplexer/demultiplexer

HITACHI CABLE40 citations90
US6556749B2Apr 29, 2003

Array waveguide grating and method of manufacture thereof

HITACHI CABLE17 citations82

KOKUSAI DENSHIN DENWA CO LTD

1 patent
US6317534B1Nov 13, 2001

Optical wavelength routing device

KOKUSAI DENSHIN DENWA CO LTD2 citations62