Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672411 | Insulating boards and method of manufacturing the same | Keizo Harada, Kenichi Watanabe | 1997-09-30 |
| 5643834 | Process for manufacturing a semiconductor substrate comprising laminated copper, silicon oxide and silicon nitride layers | Keizo Harada, Takao Maeda, Takatoshi Takikawa, Shunsuke Ban | 1997-07-01 |
| 5640669 | Process for preparing metallic porous body, electrode substrate for battery and process for preparing the same | Keizo Harada, Masayuki Ishii, Kenichi Watanabe | 1997-06-17 |
| 5597665 | Porous metal body, process for producing the same and battery plate formed therefrom | Keizo Harada, Masayuki Ishii | 1997-01-28 |