KT

Keizo Tatsumi

Yamaha: 25 patents #52 of 2,001Top 3%
Overall (All Time): #163,042 of 4,157,543Top 4%
25
Patents All Time

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDate
D929494 Wind instrument Yuichiro Suenaga 2021-08-31
D929495 Wind instrument Yuichiro Suenaga 2021-08-31
D893859 Case for wind instrument 2020-08-25
D865044 Piano performance controller 2019-10-29
D839954 Piano 2019-02-05
D837284 Piano 2019-01-01
D826316 Wind instrument 2018-08-21
D823375 Wind instrument 2018-07-17
D820901 Mute 2018-06-19
D818034 Mute 2018-05-15
9583079 Silencer for wind instrument Yuichiro Suenaga 2017-02-28
D767016 Electric violin 2016-09-20
D711457 Mute 2014-08-19
D692943 Electronic drum pad 2013-11-05
D688737 Electronic drum pad 2013-08-27
D597587 Electronic piano Marianne Bailey 2009-08-04
RE37909 Electronic keyboard musical instrument 2002-11-26
D413917 Electronic keyboard musical instrument 1999-09-14
D405819 Electric percussion instrument with floppy disk player 1999-02-16
D397116 Speaker box 1998-08-18
D394861 Speaker box 1998-06-02
D374671 Combined speaker and amplifier 1996-10-15
D366041 Karaoke music player 1996-01-09
D310091 Electronic string instrument 1990-08-21
4890530 Stringed musical instrument 1990-01-02