Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7086599 | Information recording medium, reproduction method, and discrimination method | Seizaburo Shimizu, Masao Tanaka, Katsuyuki Naito, Hideyuki Nakao, Yutaka Nakai +5 more | 2006-08-08 |
| 6869700 | Soft magnetic alloy fiber, manufacturing method for soft magnetic alloy fiber, and information recording article using soft magnetic alloy fiber | Takao Sawa, Katsutoshi Nakagawa, Hisashi Takahashi, Masao Obama | 2005-03-22 |
| 6731111 | Validity determination using magnetic ink having magnetic powders with different Curie temperatures | Takao Sawa, Katsutoshi Nakagawa, Tadahiko Kobayashi, Hisashi Takahashi, Masao Obama | 2004-05-04 |
| 6724521 | Electrophoresis display device | Hideyuki Nakao, Sadao Kajiura | 2004-04-20 |
| 6610425 | Soft magnetic alloy fiber, manufacturing method for soft magnetic alloy fiber, and information recording article using soft magnetic alloy fiber | Takao Sawa, Katsutoshi Nakagawa, Hisashi Takahashi, Masao Obama | 2003-08-26 |
| 6545466 | MAGNETIC POWDER FOR VALIDITY DETERMINING INK, MANUFACTURING METHOD FOR MAGNETIC POWDER FOR VALIDITY DETERMINING INK, MAGNETIC INK FOR VALIDITY DETERMINATION, PRINTING MEMBER FOR VALIDITY DETERMINATION, DETECTING DEVICE FOR PRINTING MEMBER FOR VALIDITY DETERMINATION, AND VALIDITY DETERMINATION DEVICE | Takao Sawa, Katsutoshi Nakagawa, Tadahiko Kobayashi, Hisashi Takahashi, Masao Obama | 2003-04-08 |
| 6158844 | Ink-jet recording system using electrostatic force to expel ink | Yasuo Hosaka, Hitoshi Nagato, Shuzo Hirahara, Hideyuki Nakao, Koichi Ishii +1 more | 2000-12-12 |
| 6123415 | Ink jet recording apparatus | Hitoshi Nagato, Shuzo Hirahara, Hideyuki Nakao, 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, Hitoshi Nagato, Hideyuki Nakao | 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 |
| 5475210 | Noise reduction system for optical record and reproduction apparatus using auto-power controlled semiconductor laser device | Toyoki Taguchi, Toshihiro Sugaya, Hisashi Yamada, Kei Shimura, Isao Hoshino +4 more | 1995-12-12 |
| 5306682 | Process for the regeneration of coke-deposited, crystalline silicate catalyst | Masaaki Ueda, Shunji Shibata, Kazuo Hirabayashi, Tadami Kondoh, Kohji Adachi +2 more | 1994-04-26 |
| 5268887 | Optical recording medium having offset-compensating areas | Yoshinori Honguh | 1993-12-07 |
| 4926408 | Magneto-optic recording/erasing system with simultaneous dual head control and disk error detection | Naobumi Seo | 1990-05-15 |
| 4841502 | Information recording system and reproducing for recording and reproducing information on a magneto-optical disk | Naobumi Seo | 1989-06-20 |
| 4530018 | Information recording/reproducing apparatus with disk having sections of different angular velocity | Isao Hoshino | 1985-07-16 |
| 4512006 | Optical type information read/write apparatus | Isao Hoshino | 1985-04-16 |
| 4481620 | Pregrooved optical-disk | — | 1984-11-06 |
| 4334233 | Optical recording element and its manufacturing method | — | 1982-06-08 |
| 4330205 | Optical apparatus for measuring the size and location of optical in an article | Kiyoshi Yamada, Masana Minami | 1982-05-18 |