Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827473 | Packet switching system | Kazuo Tsuzuki, Toshio Ishizuka, Mitsugu Anezaki | 1989-05-02 |
| 4810556 | Very soft polyolefin spunbonded nonwoven fabric | Yoshinori Kobayashi, Naoyuki Tamura, Takanobu Sakai | 1989-03-07 |