Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883959 | Scanning surface microscope using a micro-balance device for holding a probe-tip | Sumio Hosaka, Keiji Takata | 1989-11-28 |
| 4841191 | Piezoelectric actuator control apparatus | Keiji Takada, Masahide Okumura, Satoru Fukuhara, Toshiyuki Morimura, Sumio Hosaka | 1989-06-20 |