Inventor · disambiguated record

Hiroshi Sanpei

Also filed as: SANPEI HIROSHI

2 granted patents·2 citations·filing 2001–2001

34Inventor score

Technology areasG11B

Files withMITSUMI ELECTRIC CO LTD2

Top patents by PatentIndex Score

2 records

0144US6404591B1Magnetic head having cut-out portions for different recording density head coresMITSUMI ELECTRIC CO LTD·Filed 2001·Granted Jun 11, 2002·2 cites·4 claims
0231US6925045B2Optical pickup having two wavelength laser and simple structureMITSUMI ELECTRIC CO LTD·Filed 2001·Granted Aug 2, 2005·0 cites·2 claims

Join the waitlist — get patent alerts

Get an alert when Hiroshi Sanpei 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 →