Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874830 | Acrylic copolymer and skin protective | Izumi Saitoh, Shigeru Kido, Syuichiro Shinohara | 1989-10-17 |
| 4868878 | Sound field correction system | Yoshiro Kunugi, Akio Tokumo, Toshikazu Yoshimi, Shinjiro Kato, Shuuichi Mori +2 more | 1989-09-19 |
| 4849141 | Method for producing sustained release formulation | Keiji Fujioka, Shigeji Sato, Teruo Miyata, Masayasu Furuse, Hiromi Naito | 1989-07-18 |
| D301578 | Telephone handset | Hiroshi Ishizuka, Iwamasa Nishikado, Tsuneji Kimeda | 1989-06-13 |
| D301031 | Key telephone set | Hiroyoshi Sato, Iwamasa Nishikado, Tsuneji Kimeda | 1989-05-09 |