LexDanaLexDanabeta
Inventor

Kazuo Sugai

Inventor
Ebina, JP

Overview

39→
Patents
1984–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 39 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication65%
G06FElectric digital data processing8%
H04QSelecting6%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use6%
G09GArrangements or circuits for control of indicating devices using static means to present variable information4%
G01NInvestigating or analysing materials by determining their chemical or physical properties2%
G01SRadio direction-finding2%
G06TImage data processing or generation, in general2%
G10KSound-producing devices2%
G11CStatic stores2%
PatentTitleYear
10,965,605Communication system, communication control method, and communication apparatus202110,887,241Communication device, communication system, and communication method202110,389,626Transfer device201910,326,705Communication device and communication method20199,830,403Communication apparatus, and CAM failure diagnosis method20179,276,876'Data transfer apparatus and data transfer method'20168,953,337'Communication apparatus with removable circuit boards'20158,937,869'Communication device, communication system, and communication fault detection method'20158,774,001'Relay device and relay method'20148,625,423'Device and method for relaying packets'20148,139,576'Network routing apparatus'20128,064,353'Communication device, communication system, and communication fault detection method'20117,969,880'Device and method for relaying packets'20117,924,833'Packet transfer unit'20117,848,321'Method for high speed search tables switching and packet forwarding apparatus'20107,787,442'Communication statistic information collection apparatus'20107,760,632'Device and method for relaying packets'20107,738,465'Packet forwarding device equipped with statistics collection device and statistics collection method'20107,710,962'Packet forwarding apparatus and method for multicast packets'20107,522,592'Packet transfer unit'20097,433,301'Method of transferring packets and router device therefor'20087,408,935'Packet forwarding apparatus with a flow detection table'20087,397,765'Bandwidth monitoring device'20087,167,474'Network relaying apparatus and network relaying method capable of high-speed routing and packet transfer'20077,088,716'Network routing apparatus'20067,085,272'Network routing apparatus'20067,054,319'VPN router and VPN identification method by using logical channel identifiers'20066,874,033'Network repeater and network next transfer desitination searching method'20056,778,532'Packet relaying apparatus and high speed multicast system'20046,768,738'Packet forwarding apparatus with a flow detection table'20046,683,885'Network relaying apparatus and network relaying method'20046,671,277'Network relaying apparatus and network relaying method capable of high quality transfer of packets under stable service quality control'20036,658,003'Network relaying apparatus and network relaying method capable of high-speed flow detection'20036,650,642'Network relaying apparatus and network relaying method capable of high-speed routing and packet transfer'20036,560,233'Data processing apparatus and network relaying apparatus'20036,216,194'Information processing unit for separately controlling a plurality of shared buses'20015,581,278'Image display control system'19965,428,725'System for performing coordinate transformation of source image data'19954,472,973'Ultrasonic flaw detecting apparatus of electronically scanning type'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–2012Patents assigned to HITACHI LTD (24)· patent assignee history
1995–1996Based in Yokohama, JP· patent location history
2001–2004Patents assigned to HITACHI INFORMATION TECHNOLOGY (8)· patent assignee history
2001–2012Based in Ebina, JP· patent location history
2005Based in Zama, JP· patent location history
2008–2015Based in Hadano, JP· patent location history
2010–2021Patents assigned to ALAXALA NETWORKS CORP (14)· patent assignee history
2011–2015Patents assigned to SUGAI KAZUO (6)· patent assignee history
2011–2015Patents assigned to AKAHANE SHINICHI (3)· patent assignee history
2016–2021Based in Kawasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD241984–2012
ALAXALA NETWORKS CORP142010–2021
HITACHI INFORMATION TECHNOLOGY82001–2004
SUGAI KAZUOself62011–2015
AKAHANE SHINICHI32011–2015
Locations
LocationPatentsSpan
Ebina, JP152001–2012
Hadano, JP142008–2015
Kawasaki, JP62016–2021
Yokohama, JP21995–1996
Zama, JP12005