Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6530087 | Cable network system with ingress noise suppressing function | Hiroshi Kobayashi, Katsumi Hirai | 2003-03-04 |
| 6230195 | Communication system, user apparatus, center apparatus, and terminal interface unit for use in communication system | Mitsuru Sugawara, Masatoshi Nakao | 2001-05-08 |
| 6160990 | Cable network system with ingress noise suppressing function | Hiroshi Kobayashi, Katsumi Hirai | 2000-12-12 |
| 5739943 | Polarization control unit | Shigeru Ohshima, Tazuko Tomioka, Mitsuko Nakamura, Senji Shimanuki, Manish Sharma +2 more | 1998-04-14 |
| 5432602 | Light wavelength measuring apparatus with light modulation | Manish Sharma | 1995-07-11 |
| 5390017 | Optical network analyzer for measuring the amplitude characteristics and group delay time dispersion characteristics of an optical circuit device | Takeshi Ozeki, Manish Sharma | 1995-02-14 |
| 5276439 | Digital signal exchange equipment | Takehiko Atsumi, Taro Shibagaki, Takeshi Ozeki | 1994-01-04 |
| 5254851 | Wide-dynamic range light receiver | Hideaki Yamakawa | 1993-10-19 |
| 5240684 | Crystal diameter measuring device | Masahiko Baba | 1993-08-31 |
| 5205080 | Jig for clamp-positioning single crystal ingot | Tosihisa Nakata | 1993-04-27 |
| 5201145 | Monocrystal ingot attitude-adjusting/surface-grinding/conveying apparatus | — | 1993-04-13 |
| 5176490 | Monocrystal rod conveying apparatus | — | 1993-01-05 |
| 5140618 | Frame synchronization circuit | Osamu Kinoshita, Takako Mori, Hideki Ishibashi, Takehiko Atsumi | 1992-08-18 |
| 5135727 | Automatic single crystal ingot disconnector for single crystal pulling apparatus | — | 1992-08-04 |
| 5020907 | Axis offset measuring device | — | 1991-06-04 |
| 5009864 | Recharging device for czochralski method | Toshiharu Uesugi | 1991-04-23 |
| 5007204 | Apparatus for shaping ingots into right circular cylindrical form | Takashi Mori | 1991-04-16 |
| 4977561 | Oscillation mode switching laser devices | Hideaki Yamakawa | 1990-12-11 |
| 4969745 | Device for measuring offset of axis of crystal lifting wire | — | 1990-11-13 |
| 4951422 | External cylindrical grinding unit | Takashi Mori | 1990-08-28 |
| 4934104 | Cone tail chuck apparatus, and a method for using the same apparatus | — | 1990-06-19 |
| 4928318 | Optical signal transmission system including pulsed FM modulator/demodulator | Taro Shibagaki, Fumihiko Shimizu | 1990-05-22 |
| 4899339 | Digital multiplexer | Taro Shibagaki, Takehiko Atsumi, Sadao Tanikoshi | 1990-02-06 |
| 4795919 | Zero signal state detecting circuit | Sadao Tanikoshi, Taro Shibagaki | 1989-01-03 |
| 4704715 | Information communication system | Taro Shibagaki, Toshifumi Tamura, Takeshi Ozeki, Yoichi Hirayama | 1987-11-03 |