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Inventor

Ken Naganuma

Inventor
Tokyo, JP

Overview

10→
Patents
2012–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 10 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 communication40%
G06FElectric digital data processing24%
H04WWireless communication networks16%
G08GTraffic control systems12%
G01SRadio direction-finding4%
G06NComputing arrangements based on specific computational models4%
PatentTitleYear
11,120,143Data analysis server, data analysis system, and data analysis method202111,018,876Signature verification system, signature verification method, and storage medium202110,489,604Searchable encryption processing system and searchable encryption processing method20199,601,016'Communication system, vehicle-mounted terminal, roadside device'20179,432,197'Wireless communications device and authentication processing method'20169,275,250'Searchable encryption processing system'20169,276,734'Confidential computation system, confidential computation method, and confidential computation program'20169,135,820'Communication system, vehicle-mounted terminal, roadside device'20158,819,418'Communication system, vehicle-mounted terminal, roadside device'20148,165,601'Positional information system'2012

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2012–2021Patents assigned to HITACHI LTD (6)· patent assignee history
2012–2016Patents assigned to NAGANUMA KEN (5)· patent assignee history
2012–2016Patents assigned to ANDO ERIKO (3)· patent assignee history
2012–2016Based in Yokohama, JP· patent location history
2014–2017Patents assigned to RENESAS ELECTRONICS CORP (4)· patent assignee history
2014–2016Patents assigned to OWADA TORU (2)· patent assignee history
2016–2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD62012–2021
NAGANUMA KENself52012–2016
RENESAS ELECTRONICS CORP42014–2017
ANDO ERIKO32012–2016
OWADA TORU22014–2016
Locations
LocationPatentsSpan
Tokyo, JP52016–2021
Yokohama, JP52012–2016