Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D537257 | Mask pattern for display unit | — | 2007-02-27 |
| D526360 | Mask for a display unit and display unit for an electronic display board | Akiko Yamamoto | 2006-08-08 |
| D526361 | Mask for a display unit and display unit for an electronic display board | Akiko Yamamoto | 2006-08-08 |
| D510956 | Mask for a display unit and display unit for an electronic display board | Akiko Yamamoto | 2005-10-25 |
| D506510 | Mask for a display unit and display unit for an electronic display board | Akiko Yamamoto | 2005-06-21 |
| D503745 | Mask for a display unit and display unit for an electronic display board | Akiko Yamamoto | 2005-04-05 |
| D445922 | Light emitting diode dot matrix unit | — | 2001-07-31 |