| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 9 | |
| #2 | EPO (European Patent Office) | 9 | |
| #3 | United States | 5 | |
| #4 | China | 3 | |
| #5 | Republic of Korea | 3 | |
| #6 | Australia | 2 | |
| #7 | Germany | 1 | |
| #8 | France | 1 | |
| #9 | Hong Kong | 1 | |
| #10 | Netherlands | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Advertising | |
| #2 | Optical systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wakatake Yoshimasa | 32 |
| #2 | Wakatake Masayuki | 2 |
| #3 | Wkatake Yoshimasa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0635815A1 | Display element with an odd number of display surfaces and display unit using the same | |
| HK48993A | Rotary display element and display apparatus employing the same | |
| CA1228727A | Rotating element and display unit using the same |