Inventor · disambiguated record
Katsutoki Hanayama
Also filed as: HANAYAMA KATSUTOKI
8 granted patents·108 citations·filing 1995–2022
83Inventor score
Top patents by PatentIndex Score
8 records- 0183US12225342B2Coaxial speaker horn, and coaxial speakerYAMAHA CORP·Filed 2022·Granted Feb 11, 2025·2 cites·6 claims
- 0281US9774937B2Speaker unitYAMAHA CORP·Filed 2016·Granted Sep 26, 2017·5 cites·8 claims
- 0375US5590208ASpeaker systemPIONEER ELECTRONIC CORP·Filed 1995·Granted Dec 31, 1996·64 cites·6 claims
- 0466US10972818B2Mounting tool and speaker deviceYAMAHA CORP·Filed 2019·Granted Apr 6, 2021·1 cites·20 claims
- 0561US6792122B1Acoustic devicePIONEER CORP·Filed 1999·Granted Sep 14, 2004·36 cites·10 claims
- 0645US10516926B2Speaker unit mounting bracket, and installation speaker using the sameYAMAHA CORP·Filed 2018·Granted Dec 24, 2019·0 cites·5 claims
- 0744US10924831B2Speaker deviceYAMAHA CORP·Filed 2019·Granted Feb 16, 2021·0 cites·16 claims
- 0839US9843848B2Speaker unitYAMAHA CORP·Filed 2016·Granted Dec 12, 2017·0 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Katsutoki Hanayama 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 →