Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6941772 | Apparatus and method for manufacturing glass-base-material | Junichiro Takei, Hideo Hirasawa | 2005-09-13 |
| 6848276 | Optical fiber manufacture method, preform manufacture method, and preform manufacture apparatus | Yoshiaki Shimizu, Takaaki Nagano, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama +5 more | 2005-02-01 |