Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6158844 | Ink-jet recording system using electrostatic force to expel ink | Teruo Murakami, Yasuo Hosaka, Hitoshi Nagato, Shuzo Hirahara, Koichi Ishii +1 more | 2000-12-12 |
| 6123415 | Ink jet recording apparatus | Hitoshi Nagato, Teruo Murakami, Shuzo Hirahara, Koichi Ishii, Yasuo Hosaka | 2000-09-26 |
| 6092889 | Ink-jet head and ink-jet recording device each having a protruded-type electrode | Masayuki Nakamoto, Shuzo Hirahara, Teruo Murakami, Hitoshi Nagato | 2000-07-25 |
| 5852453 | Ink-jet printer | Shuzo Hirahara, Hitoshi Nagato, Yuko Nomura, Koichi Ishii, Yasuo Hosaka +1 more | 1998-12-22 |
| 5835113 | Ink jet printing apparatus with controlled compression and ejection of colorants in liquid ink | Shuzo Hirahara, Yasuo Hosaka, Hitoshi Nagato, Koichi Ishii, Yuko Nomura +1 more | 1998-11-10 |
| 5708940 | Electrostatic recording apparatus providing an electric field adjacent a developer roller | Yasuo Hosaka, Hitoshi Nagato | 1998-01-13 |
| 5621506 | Electrostatic recording apparatus providing an electric field adjacent a developer roller | Yasuo Hosaka, Hitoshi Nagato | 1997-04-15 |
| 5539440 | Image forming apparatus having colorant holding regions and a colorant repelling region | Kazuhiko Higuchi, Yuzo Koike, Shuzo Hirahara, Tutomu Saito, Koichi Ishii | 1996-07-23 |
| 5404157 | Apparatus for generating ions in solid ion recording head with improved stability | Yasuo Hosaka, Hitoshi Nagato, Shuzo Hirahara, Yoshikuni Matsumura, Yuzo Koike +1 more | 1995-04-04 |
| 5359434 | Scanning optical apparatus | Yuzo Koike, Tutomu Saito, Shuzo Hirahara, Masafumi Mori | 1994-10-25 |
| 5296878 | Apparatus for generating ions in solid ion recording head with improved stability | Yasuo Hosaka, Hitoshi Nagato, Shuzo Hirahara | 1994-03-22 |
| 5270741 | Apparatus for generating ions in solid ion recording head with improved stability | Yasuo Hosaka, Hitoshi Nagato, Shuzo Hirahara, Yoshikuni Matsumura, Yuzo Koike +1 more | 1993-12-14 |
| 5239317 | Apparatus for generating ions in solid ion recording head with improved stability | Yasuo Hosaka, Hitoshi Nagato, Shuzo Hirahara | 1993-08-24 |
| 4320482 | Switch for an electronic timepiece | — | 1982-03-16 |
| 4266289 | Calendar correcting mechanism | — | 1981-05-05 |
| 4261047 | Date driving mechanism of watch | — | 1981-04-07 |