Issued Patents 1994
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373404 | Helical scan type rotary head drum unit | Daiichirou Katou, Hitoshi Yanagisawa, Takuji Sekiguchi, Toshihiko Okina | 1994-12-13 |
| 5337281 | Non-volatile semiconductor memory device in which data can be erased on a block basis and method of erasing data on a block basis in non-volatile semiconductor memory device | Makoto Yamamoto | 1994-08-09 |
| 5293212 | Non-volatile semiconductor memory device allowing erase of storage data of an arbitrary memory cell and method of erasing data in non-volatile semiconductor memory device | Makoto Yamamoto | 1994-03-08 |
| 5287317 | Non-volatile semiconductor memory device with over-erasing prevention | Makoto Yamamoto | 1994-02-15 |
| 5283758 | Non-volatile semiconductor memory device | Takeshi Nakayama, Yasushi Terada, Masanori Hayashikoshi, Yoshikazu Miyawaki | 1994-02-01 |
| 5281083 | Vortex flow blower | Eiichi Ito, Susumu Yamazaki, Masayuki Fujio, Toshiharu Yoshidomi, Hiroshi Asabuki | 1994-01-25 |