Inventor · disambiguated record
Ryosuke Fujiwara
Also filed as: FUJIWARA RYOSUKE
29 granted patents·11 pending applications·63 citations·filing 2004–2023
94Inventor score
Top patents by PatentIndex Score
40 records- 0186US8363693B2Adaptive frequency hopping in time-slotted based wireless networkHITACHI LTD·Filed 2010·Granted Jan 29, 2013·9 cites·20 claims
- 0286US7881684B2Receiver, frequency deviation measuring unit and positioning and ranging systemHITACHI LTD·Filed 2006·Granted Feb 1, 2011·10 cites·11 claims
- 0383US7664161B2Pulse generator and the transmitter with a pulse generatorRENESAS TECH CORP·Filed 2006·Granted Feb 16, 2010·11 cites·7 claims
- 0477US8073465B2Reciever, frequency deviation measuring unit and positioning and ranging systemNAKAGAWA TATSUO·Filed 2010·Granted Dec 6, 2011·6 cites·12 claims
- 0573US10104016B2Communication device, communication device system, and communication methodHITACHI LTD·Filed 2014·Granted Oct 16, 2018·3 cites·6 claims
- 0672US7830953B2Receiving apparatus, communication apparatus and control apparatus using the sameRENESAS ELECTRONICS CORP·Filed 2006·Granted Nov 9, 2010·5 cites·18 claims
- 0768US9980286B2Wireless communication method, apparatus and program to manage channel usageHITACHI LTD·Filed 2014·Granted May 22, 2018·2 cites·15 claims
- 0867US8289992B2Wireless sensor-network system, sensing terminal node, and base stationFUJIWARA RYOSUKE·Filed 2009·Granted Oct 16, 2012·4 cites·17 claims
- 0963US7664163B2ReceiverRENESAS TECH CORP·Filed 2005·Granted Feb 16, 2010·2 cites·5 claims
- 1062US7321575B2Node position measuring systemHITACHI LTD·Filed 2005·Granted Jan 22, 2008·5 cites·14 claims
- 1161US10581622B2Communication device and communication systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2016·Granted Mar 3, 2020·1 cites·11 claims
- 1259US7912481B2Receiver, receiver for positioning system using the same, and positioning methodHITACHI LTD·Filed 2007·Granted Mar 22, 2011·4 cites·16 claims
- 1358US11659431B2Traffic control method, receiver, and communication systemHITACHI LTD·Filed 2021·Granted May 23, 2023·0 cites·14 claims
- 1458US10306339B2Large-scale sensor network systemHITACHI LTD·Filed 2014·Granted May 28, 2019·1 cites·13 claims
- 1556US2025024355A1Communication control system and communication control methodHITACHI LTD·Filed 2022·Application pending·0 cites
- 1655US10996076B2Sensor device management method and sensor device management systemHITACHI LTD·Filed 2019·Granted May 4, 2021·0 cites·11 claims
- 1755US2023396348A1Radio environment evaluation method and wireless communication characteristic evaluation systemHITACHI LTD·Filed 2023·Application pending·0 cites
- 1854US12402115B2Management device, communication control system, and communication control methodHITACHI LTD·Filed 2022·Granted Aug 26, 2025·0 cites·13 claims
- 1954US11209335B2Monitoring system and its methodHITACHI LTD·Filed 2019·Granted Dec 28, 2021·0 cites·13 claims
- 2053US8265122B2ReceiverNAKAGAWA TATSUO·Filed 2009·Granted Sep 11, 2012·0 cites·20 claims
- 2151US11544111B2Sensor device, sensor device management system, and sensor device management methodHITACHI LTD·Filed 2020·Granted Jan 3, 2023·0 cites·12 claims
- 2249US11133900B2Sensor device management method and sensor device management systemHITACHI LTD·Filed 2019·Granted Sep 28, 2021·0 cites·14 claims
- 2349US10923793B2Antenna device, manhole cover equipped with antenna device, and power distribution panel equipped with sameHITACHI LTD·Filed 2019·Granted Feb 16, 2021·0 cites·9 claims
- 2449US2024235707A1Radio wave propagation simulation system and method for generating radio wave propagation modelHITACHI LTD·Filed 2022·Application pending·0 cites
- 2547US12021681B2Communication device, surveillance server, and log collection methodHITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD·Filed 2021·Granted Jun 25, 2024·0 cites·11 claims
- 2646US7672362B2Communications apparatus, communications system, and communications methodRENESAS TECH CORP·Filed 2004·Granted Mar 2, 2010·0 cites·11 claims
- 2745US10320520B2Communication device, system and methodHITACHI LTD·Filed 2013·Granted Jun 11, 2019·0 cites·15 claims
- 2845US9967895B2Wireless transmission systemHITACHI LTD·Filed 2014·Granted May 8, 2018·0 cites·8 claims
- 2944US9722688B2Wireless transport systemHITACHI LTD·Filed 2013·Granted Aug 1, 2017·0 cites·15 claims
- 3044US2021013616A1Antenna device and manufacturing method of manhole coverHITACHI LTD·Filed 2020·Application pending·0 cites
- 3144US2008090588A1Positioning systemMIZUGAKI KENICHI·Filed 2007·Application pending·0 cites
- 3244US2008232297A1Node location method, node location system and serverMIZUGAKI KENICHI·Filed 2008·Application pending·0 cites
- 3343US9258730B2Wireless surveillance camera system and wireless surveillance camera deviceHITACHI INT ELECTRIC INC·Filed 2013·Granted Feb 9, 2016·0 cites·14 claims
- 3442US8416799B2Systems, methods and apparatuses for wireless communicationFUJIWARA RYOSUKE·Filed 2011·Granted Apr 9, 2013·0 cites·18 claims
- 3542US2008298341A1Radio communication system and radio communication methodFUJIWARA RYOSUKE·Filed 2008·Application pending·0 cites
- 3641US2006183485A1Location system and wireless base stationMIZUGAKI KENICHI·Filed 2006·Application pending·0 cites
- 3740US2018059659A1Delivery System and Delivery MethodHITACHI LTD·Filed 2017·Application pending·0 cites
- 3840US2006140253A1Ultra-wideband transmitter and transceiver using the sameRENESAS TECH CORP·Filed 2005·Application pending·0 cites
- 3939US2007217379A1Terminal location system and positioning methodHITACHI LTD·Filed 2007·Application pending·0 cites
- 4036US8755403B2Block acknowledgement for wireless communication methods, apparatuses and systemsVEYSEH MARZIEH·Filed 2011·Granted Jun 17, 2014·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →