Inventor · disambiguated record
Kenichi Sakamoto
Also filed as: SAKAMOTO KENICHI
85 granted patents·20 pending applications·1,545 citations·filing 1979–2022
99Inventor score
Files withHITACHI LTD45MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13HITACHI COMM TECH LTD6FUJINON CORP4SAKAMOTO KENICHI3
Top patents by PatentIndex Score
105 records- 0197US7079544B2Apparatus and method for interworking between MPLS network and non-MPLS networkHITACHI LTD·Filed 2001·Granted Jul 18, 2006·234 cites·19 claims
- 0295US7873277B2Passive optical network system and wavelength assignment methodHITACHI LTD·Filed 2007·Granted Jan 18, 2011·27 cites·9 claims
- 0395US6771662B1Label switching type of packet forwarding apparatusHITACHI LTD·Filed 2000·Granted Aug 3, 2004·110 cites·20 claims
- 0495US6263204B1Switching center for mobile handoverHITACHI LTD·Filed 2000·Granted Jul 17, 2001·97 cites·7 claims
- 0593US6826018B2Disk drive with head supporting deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Nov 30, 2004·37 cites·21 claims
- 0691US8036532B2Passive optical network system, optical line terminal, and optical network unitHITACHI LTD·Filed 2010·Granted Oct 11, 2011·9 cites·25 claims
- 0791US7620325B2Transmission apparatus with function of multi-step bandwidth assignment to other communication apparatusesHITACHI COMM TECH LTD·Filed 2006·Granted Nov 17, 2009·28 cites·3 claims
- 0890US7734178B2Passive optical network system, optical line terminal, and optical network unitHITACHI LTD·Filed 2007·Granted Jun 8, 2010·13 cites·28 claims
- 0990US7602800B2PON systemHITACHI COMM TECH LTD·Filed 2007·Granted Oct 13, 2009·16 cites·10 claims
- 1090US7369768B2Optical access systemHITACHI COMM TECH LTD·Filed 2006·Granted May 6, 2008·12 cites·21 claims
- 1190US6751064B2Head supporting device and disk drive using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jun 15, 2004·29 cites·37 claims
- 1290US6633571B1VPN composing method, interwork router, packet communication method, data communication apparatus, and packet relaying apparatusHITACHI LTD·Filed 1999·Granted Oct 14, 2003·144 cites·5 claims
- 1388US8522288B2IP broadcasting system and a multicast group management apparatus for the sameIKEDA HIROKI·Filed 2007·Granted Aug 27, 2013·23 cites·9 claims
- 1488US7936991B2Optical line terminating apparatus and optical communication systemHITACHI LTD·Filed 2008·Granted May 3, 2011·12 cites·16 claims
- 1588US7633954B2Apparatus and method for interworking between MPLS network and non-MPLS networkHITACHI LTD·Filed 2005·Granted Dec 15, 2009·15 cites·12 claims
- 1688US6754495B2Handover method in mobile communication systemHITACHI LTD·Filed 2001·Granted Jun 22, 2004·39 cites·4 claims
- 1786US8184977B2Optical line terminal capable of active bandwidth allocation for passive optical network systemKAZAWA TOHRU·Filed 2010·Granted May 22, 2012·6 cites·4 claims
- 1886US7889990B2Optical line terminal capable of active bandwidth allocation for passive optical network systemHITACHI LTD·Filed 2007·Granted Feb 15, 2011·11 cites·8 claims
- 1985US7054319B2VPN router and VPN identification method by using logical channel identifiersHITACHI LTD·Filed 2001·Granted May 30, 2006·39 cites·15 claims
- 2085US5167592AAutomatic transmissionJATCO CORP·Filed 1991·Granted Dec 1, 1992·38 cites·10 claims
- 2184US8260135B2Passive optical network system and wavelength assignment methodKAZAWA TOHRU·Filed 2010·Granted Sep 4, 2012·6 cites·4 claims
- 2282US7773880B2Optical access systemHITACHI LTD·Filed 2008·Granted Aug 10, 2010·6 cites·8 claims
- 2381US6259920B1Handover method in mobile communication systemHITACHI LTD·Filed 2000·Granted Jul 10, 2001·22 cites·7 claims
- 2480US7518998B2IP packet communication apparatusHITACHI LTD·Filed 2005·Granted Apr 14, 2009·7 cites·18 claims
- 2579US8401384B2Optical access system, optical switching unit and optical line terminalWAKAYAMA KOJI·Filed 2009·Granted Mar 19, 2013·8 cites·16 claims
- 2679US6785225B1Communication apparatus and communication systemHITACHI LTD·Filed 2000·Granted Aug 31, 2004·15 cites·6 claims
- 2778US6463066B2ATM switchHITACHI LTD·Filed 2001·Granted Oct 8, 2002·14 cites·4 claims
- 2876US7840137B2Optical line terminal and optical network unit capable of alarm transmission scheme for passive optical network systemHITACHI LTD·Filed 2007·Granted Nov 23, 2010·6 cites·6 claims
- 2976US7522591B2Policy settable peer-to-peer session apparatusHITACHI LTD·Filed 2003·Granted Apr 21, 2009·25 cites·4 claims
- 3076US7327527B2Lens supporting frame of lens device and method of adjusting the sameFUJINON CORP·Filed 2005·Granted Feb 5, 2008·8 cites·12 claims
- 3175US11686640B2Mask adhesion determination deviceYAMAMOTO KOGAKU·Filed 2018·Granted Jun 27, 2023·1 cites·10 claims
- 3275US7881311B2VPN composing method, interwork router, packet communication method, data communication apparatus, and packet relaying apparatusHITACHI LTD·Filed 2003·Granted Feb 1, 2011·13 cites·21 claims
- 3374US7518985B2Communication apparatus and communication systemHITACHI COMM TECH LTD·Filed 2005·Granted Apr 14, 2009·4 cites·8 claims
- 3473US7908390B2Packet forwarding apparatus using token bucket algorithm and leaky bucket algorithmHITACHI LTD·Filed 2006·Granted Mar 15, 2011·5 cites·28 claims
- 3573US7346375B2Rotating mechanism of biaxial hinge and portable telephone with the sameMITSUBISHI STEEL MFG·Filed 2004·Granted Mar 18, 2008·19 cites·11 claims
- 3673US7170718B2Wiring body with flexure sheet connecting the head slider and the driving unit in a disk apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jan 30, 2007·9 cites·18 claims
- 3773US6836479B1Variable length packet communication deviceHITACHI LTD·Filed 1999·Granted Dec 28, 2004·70 cites·12 claims
- 3872US8380065B2Optical access system and optical line terminalHITACHI LTD·Filed 2009·Granted Feb 19, 2013·4 cites·18 claims
- 3972US7586947B2Label switching type of packet forwarding apparatusHITACHI LTD·Filed 2004·Granted Sep 8, 2009·11 cites·9 claims
- 4072US7394804B2Message conversion server and IP telephoneHITACHI LTD·Filed 2003·Granted Jul 1, 2008·19 cites·12 claims
- 4172US7173932B2Packet switching apparatusHITACHI LTD·Filed 2001·Granted Feb 6, 2007·15 cites·4 claims
- 4272US7088557B2Head supporting device and disk drive unit using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 8, 2006·8 cites·29 claims
- 4371US8098678B2PON systemENDO HIDEKI·Filed 2009·Granted Jan 17, 2012·3 cites·32 claims
- 4471US7446961B2Lens deviceFUJINON CORP·Filed 2007·Granted Nov 4, 2008·5 cites·6 claims
- 4571US6943990B1Head support mechanism, information recording/reproducing apparatus, and method of manufacturing head support mechanismMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Sep 13, 2005·22 cites·68 claims
- 4671US2023128743A1Protective equipment for respiration, protective system for respiration, and management methodYAMAMOTO KOGAKU·Filed 2022·Application pending·0 cites
- 4770US8169895B2Network system and nodeTAKASE MASAYUKI·Filed 2007·Granted May 1, 2012·4 cites·10 claims
- 4869US8290107B2Clock data recovery circuitTAKASE MASAYUKI·Filed 2009·Granted Oct 16, 2012·4 cites·6 claims
- 4969US7983281B2VPN composing method, interwork router, packet communication method, data communication apparatus, and packet relaying apparatusHITACHI LTD·Filed 2007·Granted Jul 19, 2011·2 cites·11 claims
- 5069US7974282B2Network apparatus for redundant multicastALAXALA NETWORKS CORP·Filed 2007·Granted Jul 5, 2011·4 cites·11 claims
Showing the top 50 of 105 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →