Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39491 | Optical disk vibration sensing and reproducing device | Takumi Ota, Kiyoshi Kodani, Masayuki Hayashida | 2007-02-20 |
| 6914151 | Crystallization processes for the formation of stable crystals of aspartame derivative | Shigeru Kawahara, Kazutaka Nagashima, Tadashi Takemoto | 2005-07-05 |
| 6844465 | Method for preparing highly stable crystals of aspartame derivative | Shigeru Kawahara, Kazutaka Nagashima, Tadashi Takemoto | 2005-01-18 |
| 6790470 | Aspartame derivative crystal and process for producing the same | Kazutaka Nagashima, Hirotoshi Ishida, Takeshi Nagai | 2004-09-14 |
| 6613933 | Process for separating and purifying aspartame and a derivative thereof | Kazutaka Nagashima | 2003-09-02 |
| 6444251 | Sweetener compositions containing aspartame and aspartame derivative | Kazutaka Nagashima | 2002-09-03 |
| 6372278 | Sweetener composition | Hirotoshi Ishida, Takeshi Nagai, Kazutaka Nagashima, Atsuhiko Hirano | 2002-04-16 |
| 6372279 | Sweetener composition | Hirotoshi Ishida, Takeshi Nagai, Kazutaka Nagashima, Atsuhiko Hirano | 2002-04-16 |
| 6346642 | Mixed crystals comprising aspartame and aspartame derivative and process for producing the same | Kazutaka Nagashima | 2002-02-12 |
| 6081491 | Optical disk vibration sensing and reproducing device | Takumi Ota, Kiyoshi Kodani, Masayuki Hayashida | 2000-06-27 |
| 6009053 | Optical disk vibration sensing and reproducing device | Takumi Ota, Kiyoshi Kodani, Masayuki Hayashida | 1999-12-28 |
| 5886966 | Optical disk vibration sensing and reproducing device | Takumi Ota, Kiyoshi Kodani, Masayuki Hayashida | 1999-03-23 |
| 5493556 | Multi-disk player/recorder with biased locking means for disk cassettes | Shinichi Aoki | 1996-02-20 |