Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829226 | Rechargeable battery pack and charger unit combination | Masami Kitamura, Kouichi Iwanaga | 1989-05-09 |
| 4824882 | Polarizing film | Junichi Fujio, Shin Hosonuma, Masakatsu Nakatsuka, Tsutomu Nishizawa | 1989-04-25 |