Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6631233 | Graded index type optical fibers and method of making the same | Tomoyoshi Yamashita, Kazuki Nakamura | 2003-10-07 |
| 6449414 | Low chromatic aberration rod lens array, its unit and image scanner employing them | Teruta Ishimaru, Yoshihiro Uozu, Toshinori Sumi | 2002-09-10 |
| 6307992 | Graded index type optical fibers and method of making the same | Tomoyoshi Yamashita, Kazuki Nakamura | 2001-10-23 |
| 6185353 | Graded index type optical fibers and method of making the same | Tomoyoshi Yamashita, Kazuki Nakamura | 2001-02-06 |
| 5120978 | Method and apparatus for scattered light measurements | Tomoyoshi Yamashita | 1992-06-09 |
| 4798445 | Plastic optical fiber and process for producing the same | Takashi Yamamoto, Katsuhiko Shimada, Ryuji Murata, Hiromu Terada, Kenichi Sakunaga | 1989-01-17 |
| 4762392 | Plastic optical fibers | Takashi Yamamoto, Ryuji Murata, Hiromu Terada, Kenichi Sakunaga | 1988-08-09 |
| 4732716 | Process for preparation of multifilament optical fibers | Kenichi Sakunaga, Hiroshi Terada, Takashi Yamamoto | 1988-03-22 |
| 4711121 | Method and equipment for detecting pinholes of hollow filament | Kazuyoshi Koike | 1987-12-08 |
| 4639130 | Inspection apparatus for optical fiber assembly | Kazuyoshi Koike | 1987-01-27 |
| 4593975 | Image-transmitting synthetic resin rod and a process for producing the same | Jun Nakauchi | 1986-06-10 |
| 4357826 | Method of detecting pinholes in hollow fibers | Kazuyoshi Koike | 1982-11-09 |
| 4183666 | Method of measuring light transmission losses of optical materials | Shunsuke Minami, Masaharu Oda, Mikio Sera | 1980-01-15 |