Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6912083 | ASE light source, optical amplifier and laser oscillator | Yasutake Ohishi, Koichi Nakagawa, Yousuke Hiraki | 2005-06-28 |
| 6417963 | Optical fiber splicing structure | Yasutake Ohishi, Atsushi Mori, Makoto Yamada, Hirotaka Ono, Toshiyuki Shimada | 2002-07-09 |
| 6356387 | Tellurite glass, optical amplifier, and light source | Yasutake Ohishi, Atsushi Mori, Makoto Yamada, Hirotaka Ono, Toshiyuki Shimada | 2002-03-12 |
| 6278719 | Lasers, optical amplifiers, and amplification methods | Yasutake Ohishi, Makoto Yamada, Shoichi Sudo | 2001-08-21 |
| 6266181 | Tellurite glass, optical amplifier, and light source | Yasutake Ohishi, Atsushi Mori, Makoto Yamada, Hirotaka Ono, Toshiyuki Shimada | 2001-07-24 |
| 6236496 | Optical fiber amplifier and optical amplification method | Makoto Yamada, Hirotaka Ono, Yasutake Ohishi | 2001-05-22 |
| 6205164 | Lasers, optical amplifiers, and amplification methods | Yasutake Ohishi, Makoto Yamada, Shoichi Sudo | 2001-03-20 |
| 5774620 | Fluoride glass fiber | Yoshiki Nishida, Tadashi Sakamoto, Yasutake Ohishi, Shoichi Sudo | 1998-06-30 |
| 5668659 | Optical fibers for optical amplifiers | Tadashi Sakamoto, Makoto Yamada, Makoto Shimizu, Yasutake Ohishi, Shoichi Sudo | 1997-09-16 |
| 5486947 | Optical fiber for optical amplifier | Yasutake Ohishi, Yoshiki Nishida, Atsushi Mori, Shoichi Sudo | 1996-01-23 |
| 5351335 | Optical fiber for optical amplifier | Yasutake Ohishi, Yoshiki Nishida, Atsushi Mori, Shoichi Sudo | 1994-09-27 |
| 5145508 | Method of making fluoride glass using barium .beta.-diketones | Kazuo Fujiura, Yasutake Ohishi, Michiya Fujiki, Shiro Takahashi | 1992-09-08 |
| 5071460 | Process for the preparation of fluoride glass and process for the preparation of optical fiber preform using the fluoride glass | Kazuo Fujiura, Yasutake Ohishi, Michiya Fujiki, Shiro Takahashi | 1991-12-10 |
| 4380588 | Glass for infrared ray-transmitting optical fibers and optical fibers formed from said glass | Seiko Mitachi, Shuichi Shibata, Toyotaka Manabe, Mitsuho Yasu | 1983-04-19 |
| 4346176 | Glass for optical fiber | Toyotaka Manabe | 1982-08-24 |
| 4343638 | Method for manufacturing glass fibers from an infrared ray-transmitting glass fiber material | Seiko Mitachi, Shuichi Shibata, Toyotaka Manabe, Mitsuho Yasu | 1982-08-10 |
| 4308066 | Glass for optical fibers | Seiko Mitachi, Shuichi Shibata, Toyotaka Manabe, Mitsuho Yasu | 1981-12-29 |