Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7015163 | Glass member resistant to plasma corrosion | Tatsuhiro Sato | 2006-03-21 |
| 6600857 | Grating optical fiber, and optical fiber base material suitable for grating | Jun Abe, Masayasu Nagaoka, Nobuyasu Mantoku | 2003-07-29 |
| 6549711 | Soliton pulse compression optical fiber and method for making soliton pulse compression optical fiber | Tadakatsu Shimada, Noboru Edagawa, Masatoshi Suzuki, Itsuro Morita | 2003-04-15 |
| 6301412 | Apparatus and method for making multi-branching optical coupler | Tsuneo Mori, Masaaki Shirota, Seiki Ejima, Jun Abe, Sayuri Maeda | 2001-10-09 |
| 6157758 | Grating optical fiber, and optical fiber base material suitable for grating | Jun Abe, Masayasu Nagaoka, Nobuyasu Mantoku | 2000-12-05 |
| 5712941 | Rare earth element-doped multiple-core optical fiber and method for fabricating the same | Katsuyuki Imoto, Jun Abe | 1998-01-27 |
| 5706124 | Rare earth element-doped optical fiber amplifier | Katsuyuki Imoto, Jun Abe | 1998-01-06 |
| 5671309 | Wide-band optical fiber coupler and method for preparing the same | Jun Abe, Masaaki Shirota | 1997-09-23 |
| 5570448 | Rare earth element-doped multiple-core optical fiber, method for fabricating the same, and optical amplifier using the same | Katsuyuki Imoto | 1996-10-29 |
| 5440420 | Optical amplifier | Tsuneo Mori | 1995-08-08 |
| 5420950 | Wide wavelength range-optical fiber coupler and method for the preparation thereof | Tsuneo Mori | 1995-05-30 |
| 5408309 | Apparatus and method for inspecting elliplicity and eccentricity of optical fiber preforms | Tadakatsu Shimada | 1995-04-18 |
| 5406374 | Method for detecting bubbles and inclusions present in optical fiber preform and apparatus for detecting same | Tadakatsu Shimada | 1995-04-11 |
| 5404415 | Optical fiber coupler and method for preparing same | Tsuneo Mori | 1995-04-04 |
| 5329602 | Optical fiber coupler | Tsuneo Mori | 1994-07-12 |
| 5295219 | Supporting member for optical fiber coupler | Tsuneo Mori, Yukio Fujimaki | 1994-03-15 |
| 5260816 | Optical amplifier with erbium-doped fiber | Noboru Edagawa, Yoshihiro Yoshida, Minoru Taya | 1993-11-09 |
| 5246475 | Method for preparing a fused silica glass body co-doped with a rare earth element and aluminum | Noboru Edagawa, Yoshihiro Yoshida, Minoru Taya, Tadakatsi Shimada | 1993-09-21 |
| 5078488 | Method and apparatus for determining refractive index distribution | Ichirou Yamaguchi, Tadakatsu Shimada, Toshiyuki Suzuki | 1992-01-07 |
| 4874416 | Base material of optical fibers and a method for the preparation thereof | Kiyoshi Yokokawa | 1989-10-17 |
| 4772644 | Method for resin encapsulation of a semiconductor device and a resin composition therefor | Kunio Itoh, Kiyoshi Yokokawa, Tetuo Yoshida | 1988-09-20 |
| 4690504 | Quartz glass-made optical fibers and a method for the preparation thereof | Kiyoshi Yokokawa | 1987-09-01 |
| 4650511 | Method for the preparation of a dehydrated quartz glass material for light transmission | Yoshiharu Konya | 1987-03-17 |
| 4608071 | Method for reducing diameter of a glass rod or tube by drawing | Kiyoshi Yokokawa, Syouji Hosino | 1986-08-26 |