Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874957 | Contact type image sensor | Saburo Sasaki, Tsutomu Ishida | 1989-10-17 |
| 4840296 | Clamping and fixing apparatus for a refractory-made plate for a slide gate valve for controlling a molten steel flow | Takashi Otsuka, Masahiko Nose, Tadao Taniguchi, Yoshifumi Shigeta, Mototsugu Osada | 1989-06-20 |
| 4797527 | Electrode for electric discharge machining and method for producing the same | Takehisa Nakayama, Yoshihisa Tawada | 1989-01-10 |