Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493013 | Method for recording and reproducing information, apparatus therefor and recording medium | Hiroyuki Obata, Takashi Aono, Hiroshi Mohri, Masato Koike, Hideaki Amano +5 more | 2002-12-10 |
| 6025857 | Photosensitive member and electrostatic information recording method | Hiroyuki Obata, Kohji Ichimura | 2000-02-15 |
| 5981123 | Electrostatic information recording medium and electrostatic information recording and reproducing method | Makoto Matsuo, Masayuki Iijima, Yukio Taniguchi, Hiroyuki Obata, Seiji Take | 1999-11-09 |
| 5983057 | Color imaging system with selectively openable optical shutter | Makoto Matsuo, Chihaya Ogusu, Shunsuke Mukasa, Yoshiaki Kudo, Hiroyuki Obata +5 more | 1999-11-09 |
| 5731116 | Electrostatic information recording medium and electrostatic information recording and reproducing method | Makoto Matsuo, Masayuki Iijima, Yukio Taniguchi, Hiroyuki Obata, Seiji Take | 1998-03-24 |
| 5718996 | Electrostatic information recording medium and electrostatic information recording and reproducing method | Masayuki Iijima, Kyoji Dantani, Hiroyuki Obata, Makoto Matsuo, Seiji Take | 1998-02-17 |
| 5683838 | Method of producing information recording medium | Masayuki Iijima, Seiji Take, Hironori Kamiyama, Masato Okabe, Hiroyuki Obata | 1997-11-04 |
| 5672453 | Frost image recording medium and method of and apparatus for forming and reading frost image | Hiroyuki Obata, Masayuki Iijima, Masato Okabe, Hironori Kamiyama | 1997-09-30 |
| 5660958 | Information recording medium, and information recording and reproducing method | Masayuki Iijima, Seiji Take, Hironori Kamiyama, Masato Okabe, Hiroyuki Obata | 1997-08-26 |
| 5650247 | Preparation and reproduction of filters and preparation of filter photographic materials | Yukio Taniguchi | 1997-07-22 |
| 5646927 | Packaged photographic film with a plurality of liquid crystal recording regions | Osamu Shimizu, Yuudai Yamashita, Hironori Kamiyama, Shinichi Sakano, Masato Okabe | 1997-07-08 |
| 5638103 | Method for recording and reproducing information, apparatus therefor and recording medium | Hiroyuki Obata, Takashi Aono, Hiroshi Mohri, Masato Koike, Hideaki Amano +5 more | 1997-06-10 |
| 5635317 | Preparation and reproduction of filters and preparation of filter photographic materials | Yukio Taniguchi | 1997-06-03 |
| 5629920 | Photoelectric sensor, information recording system, and information recording method | Shinichi Sakano, Daigo Aoki, Masanori Akada, Osamu Shimizu | 1997-05-13 |
| 5587264 | Electrostatic information recording medium and electrostatic information recording and reproducing method | Masayuki Iijima, Kyoji Dantani, Hiroyuki Obata, Makoto Matsuo, Seiji Take | 1996-12-24 |
| 5571646 | Electrostatic information-recording media and process for recording and reproducing electrostatic information | Hiroyuki Obata, Seiji Take, Masayuki Iijima, Hironori Kamiyama | 1996-11-05 |
| 5550370 | Potential sensor employing electrooptic crystal and potential measuring method | Atsushi Takano, Hiroyuki Obata | 1996-08-27 |
| 5521040 | Frost image recording medium and method of and apparatus for forming and reading frost image | Hiroyuki Obata, Masayuki Iijima, Masato Okabe, Hironori Kamiyama | 1996-05-28 |
| 5514504 | Information recording medium, and information recording a reproducing method | Masayuki Iijima, Seiji Take, Hironori Kamiyama, Masato Okabe, Hiroyuki Obata | 1996-05-07 |
| 5492783 | Electrostatic information-recording media and process for recording and reproducing electrostatic information | Hiroyuki Obata, Seiji Take, Masayuki Iijima, Hironori Kamiyama | 1996-02-20 |
| 5488601 | Photoelectric sensor, information recording system, and information recording method | Shinichi Sakano, Daigo Aoki, Masanori Akada, Osamu Shimizu | 1996-01-30 |
| 5450168 | Moving image pickup device, medium for picking up moving images and process for picking up images continuously | Hiroyuki Obata, Atsushi Takano, Takashi Aono | 1995-09-12 |
| 5439768 | Electrostatic information recording medium and electrostatic information recording and reproducing method | Makoto Matsuo, Masayuki Iijima, Yukio Taniguchi, Hiroyuki Obata, Seiji Take | 1995-08-08 |
| 5434698 | Potential sensor employing electrooptic crystal and potential measuring method | Atsushi Takano, Hiroyuki Obata | 1995-07-18 |
| 5424156 | Electrostatic information recording medium and method of recording and reproducing electrostatic information | Daigo Aoki, Hiroyuki Obata | 1995-06-13 |