Inventor
Ryuichi Izumi
Inventor
Hamamatsu, JP
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G10Hprimary
G10HElectrophonic musical instruments27%
H04HBroadcast communication20%
H01HElectric switches13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
G02BOptical elements, systems or apparatus7%
G05GControl devices or systems insofar as characterised by mechanical features only7%
H01CResistors7%
H05KPrinted circuits7%
PatentTitleYear
9,761,391'Rotary knob'20178,562,162'Display device and manipulation device with light display'20138,498,437'Panel opening and closing structure of electric operation apparatus'20138,213,642'Slide manipulation device and slide control console'20127,875,819'Panel operator structure for electronic equipment'20117,396,994'Electronic keyboard instrument'20087,078,611'Keyboard instrument'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006–2017Patents assigned to YAMAHA CORP (7)· patent assignee history
2006–2017Based in Hamamatsu, JP· patent location history
2012–2013Patents assigned to IZUMI RYUICHI (3)· patent assignee history
2012–2013Patents assigned to NATSUME YOSHIHIRO (2)· patent assignee history
2013Patents assigned to ANDO TAKESHI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| YAMAHA CORP | 7 | 2006–2017 |
| IZUMI RYUICHIself | 3 | 2012–2013 |
| NATSUME YOSHIHIRO | 2 | 2012–2013 |
| ANDO TAKESHI | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hamamatsu, JP | 7 | 2006–2017 |