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Inventor

Koji Kaniwa

Inventor
Yokohama, JP

Overview

4→
Patents
1987–2013
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

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

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer57%
H03GControl of amplification14%
H04BTransmission14%
H04NPictorial communication, e.g. television14%
PatentTitleYear
8,406,100'Optical disc device and tracking servo control circuit therefor'20138,315,131'Optical disc apparatus and back off control method for objective lens'20124,769,722'Apparatus for recording and reproducing a video signal and for recording and reproducing a PCM audio signal on forward and reverse tape travelling directions'19884,677,645'Audio signal transmission system having noise reduction means'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1988Patents assigned to HITACHI LTD (2)· patent assignee history
1987Based in Katsuta, JP· patent location history
1988–2013Based in Yokohama, JP· patent location history
2012–2013Patents assigned to HITACHI LG DATA STORAGE INC (2)· patent assignee history
2012–2013Patents assigned to KANIWA KOJI (2)· patent assignee history
2012Patents assigned to ASHIDA AKIHIRO (1)· patent assignee history
2012Patents assigned to IKEDA JINYA (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LG DATA STORAGE INC22012–2013
HITACHI LTD21987–1988
KANIWA KOJIself22012–2013
ASHIDA AKIHIRO12012
IKEDA JINYA12012
Locations
LocationPatentsSpan
Yokohama, JP31988–2013
Katsuta, JP11987