P
PatentIndex
Search
Landscape
Sign in
Inventor
OHKAWA NAOKATSU
JP
2 patents
Patents
2 patents
US7162544B2
Jan 9, 2007
Message transfer method and apparatus
FUJITSU LTD
7 citations
68
US7720380B2
May 18, 2010
Optical transmission apparatus in ring transmission system
FUJITSU LTD
0 citations
36