Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9973888 | Relaying device, voice communication system, and voice communication method | — | 2018-05-15 |
| 6288195 | Preparation of organopolysiloxane gum | Masaharu Takahashi, Yutaka Hagiwara, Minoru Igarashi, Yoshio Tomizawa | 2001-09-11 |
| 6221996 | Preparation of organoplysiloxane gum | Keiji Shibata | 2001-04-24 |
| 6214962 | Preparation of organopolysiloxane gum | Masaharu Takahashi, Yutaka Hagiwara, Minoru Igarashi, Keiji Shibata, Yoshio Tomizawa | 2001-04-10 |