Inventor
OHTSUKI KENICHI
JP26 patents
Patents
26 patentsUS4956839ASep 11, 1990
ATM switching system
HITACHI LTD142 citations97
US5513177AApr 30, 1996
Distributed switching system having at least one module
HITACHI LTD41 citations96
US5043979AAug 27, 1991
Time-division channel arrangement
HITACHI LTD31 citations96
US4964119AOct 16, 1990
Method and system for packet exchange
HITACHI LTD87 citations96
US4910731AMar 20, 1990
Switching system and method of construction thereof
HITACHI LTD79 citations96
US6285675B1Sep 4, 2001
ATM cell switching system
HITACHI LTD15 citations92
US6016317AJan 18, 2000
ATM cell switching system
HITACHI LTD18 citations92
US5740156AApr 14, 1998
Packet switching system having self-routing switches
HITACHI LTD37 citations92
US5506713AApr 9, 1996
Optical switching system
HITACHI LTD23 citations92
US6335934B1Jan 1, 2002
Distributed type switching system
HITACHI LTD9 citations82
US6304570B1Oct 16, 2001
Distributed type switching system
HITACHI LTD9 citations82
US6215788B1Apr 10, 2001
ATM cell switching system
HITACHI LTD11 citations82
US5995510ANov 30, 1999
Distributed type switching system
HITACHI LTD9 citations82
US5734655AMar 31, 1998
Distributed type switching system
HITACHI LTD9 citations82
US6728242B2Apr 27, 2004
ATM cell switching system
HITACHI LTD2 citations74
US6639920B2Oct 28, 2003
Distributed type switching system
HITACHI LTD4 citations74
US6618372B1Sep 9, 2003
Packet switching system having-having self-routing switches
HITACHI LTD7 citations74
US6445703B2Sep 3, 2002
ATM cell switching system
HITACHI LTD7 citations74
US6389025B2May 14, 2002
Distributed type switching system
HITACHI LTD5 citations74
US6314096B1Nov 6, 2001
Packet switching system having self-routing switches
HITACHI LTD11 citations74
US5999537ADec 7, 1999
Packet switching system having self-routing switches
HITACHI LTD5 citations74
US5745495AApr 28, 1998
Apparatus for monitoring and controlling autonomous switching of trunk/subscriber lines in a distributed switching system
HITACHI LTD6 citations74
US5477362ADec 19, 1995
Optical switching system
HITACHI LTD11 citations74
US6005867ADec 21, 1999
Time-division channel arrangement
HITACHI LTD3 citations63
US7058062B2Jun 6, 2006
Packet switching system having self-routing switches
HITACHI LTD1 citations52
US6546011B1Apr 8, 2003
ATM cell switching system
HITACHI LTD0 citations52