Inventor · disambiguated record
Hisaya Ishihara
Also filed as: ISHIHARA HISAYA
6 granted patents·1 pending application·88 citations·filing 1998–2019
82Inventor score
Top patents by PatentIndex Score
7 records- 0186US6636085B2Phase shifter with an RC polyphase filterNEC ELECTRONICS CORP·Filed 2002·Granted Oct 21, 2003·37 cites·5 claims
- 0271US6531920B1Differential amplifier circuitNEC CORP·Filed 2002·Granted Mar 11, 2003·21 cites·10 claims
- 0362US6054883AHigh accuracy 90° phase shift circuit error detectionNEC CORP·Filed 1998·Granted Apr 25, 2000·20 cites·6 claims
- 0457US11896959B2Hydrotreating catalyst for hydrocarbon oil, method for producing the same, and method for hydrotreating hydrocarbon oilJGC CATALYSTS & CHEMICALS LTD·Filed 2019·Granted Feb 13, 2024·0 cites·17 claims
- 0541US7346123B2Quadrature modulatorNEC ELECTRONICS CORP·Filed 2001·Granted Mar 18, 2008·1 cites·12 claims
- 0641US6177839B1Variable gain amplifier circuitNEC CORP·Filed 1999·Granted Jan 23, 2001·9 cites·2 claims
- 0730US2017085270A1Semiconductor device, radio communication apparatus, and control method for semiconductor deviceRENESAS ELECTRONICS CORP·Filed 2016·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →