Inventor · disambiguated record
Keiko Hirao
Also filed as: HIRAO KEIKO
2 granted patents·0 citations·filing 2005–2009
27Inventor score
Technology areasG11B
Files withHITACHI MAXELL2
Top patents by PatentIndex Score
2 records- 0158US7855940B2Pickup lens with phase compensator and optical pickup apparatus using the sameHITACHI MAXELL·Filed 2009·Granted Dec 21, 2010·0 cites·12 claims
- 0249US7586815B2Pickup lens with phase compensator and optical pickup apparatus using the sameHITACHI MAXELL·Filed 2005·Granted Sep 8, 2009·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →