Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842781 | Colored polarizing film and method of making same | Yasuyuki Yamada, Junichi Fujio, Shin Hosonuma | 1989-06-27 |
| 4824882 | Polarizing film | Katsuji Nakamura, Junichi Fujio, Shin Hosonuma, Masakatsu Nakatsuka | 1989-04-25 |
| 4808503 | Electrophotographic receptors with charge generating azo-substituted tetraphenyl-thiophene or thiophene 1,1-dioxide | Yasuyuki Yamada, Hisato Itoh, Akihiro Yamaguchi | 1989-02-28 |
| 4808507 | Electrophotographic photoreceptor 2-Phenyl-benzooxazole bisazo based | Yasuyuki Yamada, Hisato Itoh, Akihiro Yamaguchi | 1989-02-28 |