Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33094 | Electrophotographic member with alpha-si layers | Eiichi Maruyama, Sachio Ishioka, Yoshinori Imamura, Hirokazu Matsubara, Yasuharu Shimomoto +1 more | 1989-10-17 |
| 4855951 | Method for erasing recording in a PHB memory | Yasushi Tomioka, Shuji Imazeki, Motoyasu Terao, Masahiro Ojima | 1989-08-08 |