Inventor
SAKAMOTO KENICHI
JP86 patents
⚠️ This page may combine multiple inventors who share the name “SAKAMOTO KENICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
32 patentsUS7079544B2Jul 18, 2006
Apparatus and method for interworking between MPLS network and non-MPLS network
HITACHI LTD234 citations99
US6771662B1Aug 3, 2004
Label switching type of packet forwarding apparatus
HITACHI LTD110 citations99
US6633571B1Oct 14, 2003
VPN composing method, interwork router, packet communication method, data communication apparatus, and packet relaying apparatus
HITACHI LTD144 citations99
US6263204B1Jul 17, 2001
Switching center for mobile handover
HITACHI LTD97 citations99
US6836479B1Dec 28, 2004
Variable length packet communication device
HITACHI LTD70 citations96
US6754495B2Jun 22, 2004
Handover method in mobile communication system
HITACHI LTD39 citations96
US6108546AAug 22, 2000
Handover method in mobile communication system
HITACHI LTD33 citations96
US6907006B1Jun 14, 2005
Method and apparatus for detecting faults in IP packet communication
HITACHI LTD28 citations93
US7881311B2Feb 1, 2011
VPN composing method, interwork router, packet communication method, data communication apparatus, and packet relaying apparatus
HITACHI LTD13 citations92
US7873277B2Jan 18, 2011
Passive optical network system and wavelength assignment method
HITACHI LTD27 citations92
US7522591B2Apr 21, 2009
Policy settable peer-to-peer session apparatus
HITACHI LTD25 citations92
US7054319B2May 30, 2006
VPN router and VPN identification method by using logical channel identifiers
HITACHI LTD39 citations92
US6259920B1Jul 10, 2001
Handover method in mobile communication system
HITACHI LTD22 citations92
US6185212B1Feb 6, 2001
ATM cell processing apparatus
HITACHI LTD21 citations92
US8036532B2Oct 11, 2011
Passive optical network system, optical line terminal, and optical network unit
HITACHI LTD9 citations84
US7936991B2May 3, 2011
Optical line terminating apparatus and optical communication system
HITACHI LTD12 citations84
US7889990B2Feb 15, 2011
Optical line terminal capable of active bandwidth allocation for passive optical network system
HITACHI LTD11 citations84
US7734178B2Jun 8, 2010
Passive optical network system, optical line terminal, and optical network unit
HITACHI LTD13 citations84
US7633954B2Dec 15, 2009
Apparatus and method for interworking between MPLS network and non-MPLS network
HITACHI LTD15 citations84
US7586947B2Sep 8, 2009
Label switching type of packet forwarding apparatus
HITACHI LTD11 citations84
US7173932B2Feb 6, 2007
Packet switching apparatus
HITACHI LTD15 citations84
US6785225B1Aug 31, 2004
Communication apparatus and communication system
HITACHI LTD15 citations84
US7379454B2May 27, 2008
Packet routing apparatus and routing controller
HITACHI LTD11 citations83
US6463066B2Oct 8, 2002
ATM switch
HITACHI LTD14 citations83
US7394804B2Jul 1, 2008
Message conversion server and IP telephone
HITACHI LTD19 citations82
US7773880B2Aug 10, 2010
Optical access system
HITACHI LTD6 citations74
US7518998B2Apr 14, 2009
IP packet communication apparatus
HITACHI LTD7 citations74
US7054265B1May 30, 2006
Communication apparatus and communication system
HITACHI LTD6 citations74
US6289008B1Sep 11, 2001
Communication system
HITACHI LTD11 citations74
US6178165B1Jan 23, 2001
Communication system
HITACHI LTD9 citations74
US6049534AApr 11, 2000
Communication system
HITACHI LTD6 citations74
US6249524B1Jun 19, 2001
Cell buffer memory for a large capacity and high throughput ATM switch
HITACHI LTD14 citations73
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
8 patentsUS6751064B2Jun 15, 2004
Head supporting device and disk drive using the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD29 citations93
US6943990B1Sep 13, 2005
Head support mechanism, information recording/reproducing apparatus, and method of manufacturing head support mechanism
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations92
US6826018B2Nov 30, 2004
Disk drive with head supporting device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD37 citations92
US6225712B1May 1, 2001
Voice coil motor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD26 citations92
US4539613ASep 3, 1985
Loading apparatus for a recording medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations79
US7170718B2Jan 30, 2007
Wiring body with flexure sheet connecting the head slider and the driving unit in a disk apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74
US7088557B2Aug 8, 2006
Head supporting device and disk drive unit using the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74
US6614625B1Sep 2, 2003
Magnetic disk apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74
HITACHI COMM TECH LTD
3 patentsUS7620325B2Nov 17, 2009
Transmission apparatus with function of multi-step bandwidth assignment to other communication apparatuses
HITACHI COMM TECH LTD28 citations92
US7602800B2Oct 13, 2009
PON system
HITACHI COMM TECH LTD16 citations84
US7369768B2May 6, 2008
Optical access system
HITACHI COMM TECH LTD12 citations84
JATCO CORP
2 patentsKAZAWA TOHRU
2 patentsIKEDA HIROKI
1 patentMITSUBISHI STEEL MFG
1 patentWAKAYAMA KOJI
1 patentShowing the top 50 of 86 patents by PatentIndex Score.