Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D333651 | Battery charger for a facsimile transmitter and receiver | Isato Murakawa, Hideji Takemasa | 1993-03-02 |
| D331753 | Facsimile transmitter and receiver | Isato Murakawa, Hideji Takemasa | 1992-12-15 |