Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887567 | Connecting arrangement in valve operating system for internal combustion engine | Masaaki Matsuura, Masahiro Kuroki, Mitsuru Ishikawa | 1989-12-19 |
| 4873156 | Solid electrolytic fuel cell and method for manufacturing same | Tokuki Satake, Hiroshi Sakai, Hayami Nakatani, Masaru Ishibashi | 1989-10-10 |
| 4858577 | Rotary valve device for internal combustion engines | Masaaki Matsuura, Mitsuru Ishikawa, Masahiro Kuroki | 1989-08-22 |