Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863835 | Developer composition for lithographic printing plates | Shigeki Shimizu, Akinobu Oshima, Hiroshi Ide | 1989-09-05 |
| 4828936 | Aluminum alloy sheet excellent in high-temperature sagging resistance and sacrificial anode property and having high room-temperature strength | Ken Toma, Masami Asano, Shoji Takeuchi, Yo Takeuchi | 1989-05-09 |