Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6766046 | Plate glass shatter testing method, device, imaging method for glass testing and image signal processing method | Hitoshi Saito | 2004-07-20 |
| 6573025 | Optical disc | Hiroaki Miwa, Ryoichi Sudo, Eiji Koyama | 2003-06-03 |
| 6465151 | Method of manufacturing optical discs | Hiroaki Miwa, Ryoichi Sudo, Eiji Koyama | 2002-10-15 |
| 6191675 | High voltage transformer and ignition transformer using the same | Ryoichi Sudo, Kazutoshi Kobayashi, Makoto Iida | 2001-02-20 |
| 6140028 | Optical recording and reproduction apparatus | Hiroaki Miwa, Ryoichi Sudo, Eiji Koyama | 2000-10-31 |
| 5906907 | Optical disc | Hiroaki Miwa, Ryoichi Sudo, Eiji Koyama | 1999-05-25 |
| 5766407 | Optical disk producing apparatus | Hiroaki Miwa, Ryoichi Sudo, Toshiaki Taii | 1998-06-16 |
| 5686227 | Optical reproduction apparatus | Hiroaki Miwa, Ryoichi Sudo, Eiji Koyama | 1997-11-11 |
| 5582677 | Optical disk producing apparatus | Hiroaki Miwa, Ryoichi Sudo, Toshiaki Taii | 1996-12-10 |
| 5543271 | Optical recording and reproduction apparatus | Hiroaki Miwa, Ryoichi Sudo, Eiji Koyama | 1996-08-06 |
| 5401610 | Optical disc | Hiroaki Miwa, Ryoichi Sudo, Eiji Koyama | 1995-03-28 |
| 5254659 | Insulating coating composition, solderable insulated wires, production process of the insulated wires and flyback transformers using the insulated wires | Ryoichi Sudo, Makoto Kobata, Fusaji Shoji, Masayoshi Kitadani, Kouji Oikawa | 1993-10-19 |
| 5244775 | Method of manufacturing an optical disc | Hiroaki Miwa, Ryoichi Sudo, Eiji Koyama | 1993-09-14 |
| 5071236 | Replica plate, process for producing the same and projection type television using the same | Ryoichi Sudo, Chiyoko Iwano, Hiroaki Miwa, Hiroyuki Onodera | 1991-12-10 |
| 4957990 | Materials for optical use | Ryoichi Sudo, Makoto Kobata, Hiroaki Miwa | 1990-09-18 |
| 4897228 | Method for producing optical disk base | Hiroaki Miwa, Ryoichi Sudo | 1990-01-30 |
| 4889757 | Optical recording disk | Shinkichi Horigome, Toshio Niihara, Norio Ohta, Yutaka Sugita, Yoshinori Miyamura +2 more | 1989-12-26 |
| 4835027 | Optical disc | Ryoichi Sudo, Hiroaki Miwa, Shinkichi Horigome | 1989-05-30 |
| 4812346 | Optical disc base plate and process for producing the same | Ryoichi Sudo, Hiroaki Miwa | 1989-03-14 |
| 4729938 | Optical disc base plate having a primer layer formed of an ultraviolet-cured resin composition | Hiroaki Miwa, Ryoichi Sudo | 1988-03-08 |
| 4668550 | Optical disc | Hiroaki Miwa, Ryoichi Sudo, Shinkichi Horigome | 1987-05-26 |
| 4460535 | Method for producing flyback transformers | Makoto Kitoh, Noboru Terunuma, Noboru Mitsugi, Akira Kageyama | 1984-07-17 |