Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869938 | Polypropylene sheet for press-through packages, production process thereof, and polypropylene resin composition | Katsuyuki Usami, Toru Ueki, Hajime Sentoku, Kazuharu Kanezaki | 1989-09-26 |
| 4818736 | High dielectric constant type ceramic composition | Yohachi Yamashita, Osamu Furukawa, Mitsuo Harata | 1989-04-04 |
| 4803891 | Transmission for controlled equipment | — | 1989-02-14 |