Inventor · disambiguated record
Yasuyuki Koyama
Also filed as: KOYAMA YASUYUKI
2 granted patents·15 citations·filing 2001–2017
55Inventor score
Technology areasH03F
Files withROHM CO LTD2
Top patents by PatentIndex Score
2 records- 0161US10367459B2Class-D amplifier circuitROHM CO LTD·Filed 2017·Granted Jul 30, 2019·2 cites·12 claims
- 0260US6792121B2Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuitROHM CO LTD·Filed 2001·Granted Sep 14, 2004·13 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →