Inventor · disambiguated record
Keiji Narusawa
Also filed as: NARUSAWA KEIJI
7 granted patents·24 citations·filing 1997–2008
79Inventor score
Files withSONY CORP7
Top patents by PatentIndex Score
7 records- 0166US6920002B2Reproducing amplifier and magnetic recording and reproducing apparatus employing the reproducing amplifierSONY CORP·Filed 2002·Granted Jul 19, 2005·9 cites·8 claims
- 0253US6683740B1Architecture for a hard disk drive write amplifier circuit with damping controlSONY CORP·Filed 2000·Granted Jan 27, 2004·3 cites·35 claims
- 0341US8023391B2Photodetection device and optical disk deviceSONY CORP·Filed 2008·Granted Sep 20, 2011·0 cites·3 claims
- 0440US6154333AAmplification circuitSONY CORP·Filed 1998·Granted Nov 28, 2000·8 cites·7 claims
- 0538US6762894B2Head apparatus, hard disk apparatus and recording and playback apparatusSONY CORP·Filed 2001·Granted Jul 13, 2004·0 cites·12 claims
- 0636US5818211ACurrent generating circuit for read/write headSONY CORP·Filed 1997·Granted Oct 6, 1998·4 cites·6 claims
- 0735US6798601B2Impact detecting circuit, impact detecting apparatus, and recording and reproducing apparatus including sameSONY CORP·Filed 2002·Granted Sep 28, 2004·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →