Inventor
Fumio Rokkaku
Inventor
Hamamatsu, JP
Overview
Patents· 3 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G10Hprimary
G10HElectrophonic musical instruments60%
A63HToys, e.g. tops, dolls, hoops or building blocks20%
G11BInformation storage based on relative movement between record carrier and transducer20%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–1993Patents assigned to ROLAND CORP (3)· patent assignee history
1991–1993Based in Hamamatsu, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ROLAND CORP | 3 | 1991–1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hamamatsu, JP | 3 | 1991–1993 |