Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6149321 | Film drawing device and a drawing plate for use in the film drawing device | Masanori Nishibata, Nobuyuki Wada, Hideto YOSHIZUKA, Keiji Ueno, Masayasu Nakaoka +1 more | 2000-11-21 |
| 5585032 | Ferromagnetic fine powder for magnetic recording | Masaharu Hirai, Nobusuke Takumi, Saburo Kato | 1996-12-17 |
| 5246609 | Process for preparing ferromagnetic fine particles for magnetic recording | Masaharu Hirai, Nobusuke Takumi, Saburo Kato | 1993-09-21 |
| 5204779 | Zoom lens capable of being adjusted for tracking | Shigeru Oshima | 1993-04-20 |
| 4953952 | Color liquid crystal displaying panels | Takuzo Okumura, Toyokazu Okada, Hitoshi Kikui | 1990-09-04 |
| 4720862 | Method and apparatus for speech signal detection and classification of the detected signal into a voiced sound, an unvoiced sound and silence | Takanori Miyamoto | 1988-01-19 |
| 4653098 | Method and apparatus for extracting speech pitch | Takanori Miyamoto | 1987-03-24 |
| 4589015 | Color television camera with bias light device featuring reduced color shading | Jun Hosoya, Shigeru Ohshima, Takeshi Sekiguchi | 1986-05-13 |
| 4560544 | Process for the preparation of acicular .alpha.-FeOOH for magnetic recording materials | Tsuneo Ishikawa, Taro Amamoto, Toshihiko Kawamura | 1985-12-24 |
| 4539261 | Process for producing magnetic powder and product | Masatsuyo Maruo, Kiyoshi Asano | 1985-09-03 |
| 4501774 | Process for the production of cobalt-containing magnetic iron oxide powder | Kokichi Miyazawa, Tsuneo Ishikawa, Ichiro Honma, Masaharu Hirai, Makoto Ogasawara +1 more | 1985-02-26 |
| 4491958 | Speech synthesizer | Kazuhiro Umemura, Tohru Sampei, Hirokazu Sato | 1985-01-01 |
| 4486467 | Process for producing cobalt-containing magnetic iron oxide powder | Tsuneo Ishikawa, Ichiro Honma, Arata Koyama, Masaharu Hirai, Masatoshi Amano | 1984-12-04 |
| 4414245 | Process for producing cobalt containing ferromagnetic iron oxides | Kokichi Miyazawa, Tsuneo Ishikawa, Ichiro Honma, Arata Koyama, Masatoshi Amano | 1983-11-08 |
| 4395119 | Method for automatic, non-destructive measurement of eccentricity of coated electrodes | Akihiko Iochi, Isamu Kaise, Kazuo Takeuchi, Katsuhiko Nomura | 1983-07-26 |
| 4349699 | Speech synthesizer | Akihiro Asada, Kazuhiro Umemura, Hirokazu Sato, Kenya Murakami, Kiyoshi Into | 1982-09-14 |
| 4340781 | Speech analysing device | Akira Ichikawa, Akira Nakajima, Yoshihiro Ohta, Kazuhiro Umemura | 1982-07-20 |
| 4283601 | Preprocessing method and device for speech recognition device | Akira Nakajima, Akira Ichikawa | 1981-08-11 |
| 4211897 | Multifrequency signal receiving system | Akira Ichikawa, Kazuhito Hirose | 1980-07-08 |