Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5981042 | Medium for recording information on ferroelectric material using polarization | Ryoichi Yamamoto, Shizuo Umemura | 1999-11-09 |
| 5960224 | Image forming apparatus and fluid injecting apparatus | Tsutomu Takatsuka, Toshihiko Yamada | 1999-09-28 |
| 5746373 | Liquid injection apparatus | — | 1998-05-05 |
| 5686725 | Method for reading of invisible marking | Tsutomu Maruyama, Atsushi Akiyama, Hiroyasu Matsuki, Sadao Chigira, Masanobu Hidaka | 1997-11-11 |
| 5684522 | Method of recording information on ferroelectric material using polarization | Ryoichi Yamamoto, Shizuo Umemura | 1997-11-04 |
| 5574530 | Device for applying solvent for forming an image | — | 1996-11-12 |
| 5547501 | Method for formation of invisible marking and method for reading of invisible marking | Tsutomu Maruyama, Atsushi Akiyama, Sadao Chigira, Masanobu Hidaka | 1996-08-20 |
| 5418029 | Information recording medium and method | Ryoichi Yamamoto, Shizuo Umemura | 1995-05-23 |
| 5371729 | Information recording method | Ryoichi Yamamoto, Shizuo Umemura | 1994-12-06 |
| 5269825 | Method of manufacturing radiation-resistant optical fiber | Tsunemi Kakuta | 1993-12-14 |
| 5048923 | Image fiber, image fiber preform, and manufacturing processes thereof | Takashi Tsumanuma, Toshiyuki Tanaka, Naoki Shamoto, Katsuyuki Seto, Kouji Tanaka | 1991-09-17 |
| 4896941 | Image-transmitting fiber | Shotaro Hayashi, Tsugio Sonobe, Kiyonori Ishii, Sadao Chigira, Takashi Tsumanuma +1 more | 1990-01-30 |
| 4770493 | Heat and radiation resistant optical fiber | Kuniaki Ara, Hiroshi Rindo, Koichiro Nakamoto, Takashi Tsumanuma, Sadao Chigira +1 more | 1988-09-13 |
| 4707075 | Very-low-temperature fiberscope | Eiji Fukushima, Minoru Tanaka, Sadao Chigira | 1987-11-17 |
| 4679899 | Optical fiber | Toshiaki Kobayashi, Toshiaki Murayama, Yasuyuki Sugawara, Naoshi Uesugi | 1987-07-14 |
| 4388098 | Apparatus for producing multi-component glass fiber preform | Shiro Takahashi, Koichi Inada, Osamu Fukuda | 1983-06-14 |
| 4336049 | Method for producing multi-component glass fiber preform | Shiro Takahashi, Koichi Inada, Osamu Fukuda | 1982-06-22 |
| 4330698 | Microwave melter | Yoshihisa Sawada, Fumiaki Komatsu, Yorihisa Sakaki | 1982-05-18 |