Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6779362 | Method of making an optical fiber preform where a second elongation is based on a mark on a glass rod | Yoshiaki Shimizu, Takaaki Nagano, Hideo Hirasawa, Masataka Watanabe, Kazuhisa Hatayama +5 more | 2004-08-24 |
| 6742363 | Straightening a glass rod for use in making an optical fiber preform | Waichi Yamamura, Mitsukuni Sakashita, Hideo Hirasawa | 2004-06-01 |
| 6735986 | Apparatus for preventing redeposition of silica during flame severing | Shinji Suzuki, Hideo Hirasawa | 2004-05-18 |
| 6698240 | Apparatus for manufacturing glass base material and a method for manufacturing glass base material | Hiroshi Tsumura, Hiroyuki Koide, Yuuji Tobisaka, Kazuhisa Hatayama, Go Ogino +1 more | 2004-03-02 |
| 6672112 | OVD apparatus including air-regulating structure | Yuuji Tobisaka, Hiroshi Machida, Masataka Watanabe, Hiroshi Tsumura, Hideo Hirasawa | 2004-01-06 |