Inventor · disambiguated record

Hisamitsu Tanaka

Also filed as: TANAKA HISAMITSU

3 granted patents·81 citations·filing 1990–1998

74Inventor score

Technology areasG11B

Files withHITACHI LTD3

Top patents by PatentIndex Score

3 records

0180US6091678AMethod and apparatus for detecting position of alternated land and groove of information recording mediumHITACHI LTD·Filed 1998·Granted Jul 18, 2000·37 cites·29 claims
0279US5541909AOptical disc with phase pits and a reproducing apparatus for data recorded on the optical discHITACHI LTD·Filed 1993·Granted Jul 30, 1996·27 cites·15 claims
0365US5179545ATracking control apparatus for controlling the tracking of a target trackHITACHI LTD·Filed 1990·Granted Jan 12, 1993·17 cites·18 claims

Join the waitlist — get patent alerts

Get an alert when Hisamitsu Tanaka files or is granted a new patent.

We store only your email — no account needed. See our privacy policy.

Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →