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Inventor

Hiroki Rikiyama

Inventor
Tokyo, JP

Overview

3→
Patents
1994–2010
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

H04Jprimary
H04JMultiplex communication67%
H04BTransmission33%
PatentTitleYear
7,649,162'Optical feedback control unit, optical communication system, feedback control method, and recording medium for recording program'20105,339,308'Signal size judging apparatus'19945,313,500'Frame synchronization circuit comprising a series-to-parallel converter'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994Patents assigned to NEC CORP (2)· patent assignee history
1994Based in Tokyo, JP· patent location history
2010Patents assigned to ASAHI KOJI (1)· patent assignee history
2010Patents assigned to OGUMA TAKEFUMI (1)· patent assignee history
2010Patents assigned to RIKIYAMA HIROKI (1)· patent assignee history
2010Based in Minato-ku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NEC CORP21994
ASAHI KOJI12010
OGUMA TAKEFUMI12010
RIKIYAMA HIROKIself12010
Locations
LocationPatentsSpan
Tokyo, JP21994
Minato-ku, JP12010