Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6862901 | Process and apparatus for producing glass fibers | Keiji Otaki, Yoshiyuki Harada | 2005-03-08 |
| 5154746 | Process and apparatus for forming glass filaments | Kiwamu Okuma, Keiji Otaki, Mitsuji Yoda | 1992-10-13 |