Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5279924 | Manufacturing method of optical diffraction grating element with serrated gratings having uniformly etched grooves | Keiji Sakai, Katsuhiro Kubo, Yukio Kurata, Takahiro Miyake | 1994-01-18 |
| 5257131 | Polarization diffraction element and polarization detector employing the same | Takahiro Miyake, Yasuo Nakata, Yukio Kurata | 1993-10-26 |
| 5253237 | Optical head device | Takahiro Miyake, Yukio Kurata, Yasuo Nakata, Katsuhiro Kubo | 1993-10-12 |
| 5251280 | Liquid crystal display apparatus | Atsushi Asada, Toshio Ishikawa, Yasuo Nakata, Yukio Kurata | 1993-10-05 |
| 5202869 | Optical head device including diffraction grating | Takahiro Miyake, Yukio Kurata | 1993-04-13 |
| 5198508 | Resin compositions and molded articles | Hiroshi Ueda, Hiroshi Inoue, Toshikazu Kaneda, Toshiaki Moriya, Tsutomu Kumazawa | 1993-03-30 |
| 5173890 | Optical pickup device including diffraction grating | Takahiro Miyake, Yukio Kurata | 1992-12-22 |
| 5128914 | Optical pickup apparatus utilizing a diffraction device | Yukio Kurata, Yasuo Nakata, Takahiro Miyake | 1992-07-07 |
| 5111449 | Optical pick-up device using diffraction grating element having two sub-regions | Yukio Kurata, Toshiya Nagahama | 1992-05-05 |
| 5085496 | Optical element and optical pickup device comprising it | Takahiro Miyake, Yasuo Nakata, Yukio Kurata, Nobuo Ogata, Tetsuo Ueyama +1 more | 1992-02-04 |
| 5049732 | Optical pickup device with diffraction device | Toshiya Nagahama, Yasuo Nakata, Yukio Kurata | 1991-09-17 |
| 4985880 | Optical information recording and reproducing apparatus | Nobuo Ogata, Mitsuo Ishii, Yukio Kurata, Yasuo Nakata, Takayuki Inoue +1 more | 1991-01-15 |
| 4975192 | Cyclone separator | Akira Uda, Makoto Harada, Masaaki Sato | 1990-12-04 |
| 4942739 | Mixing chamber for an air-conditioning system | Akira Uda, Makoto Harada, Masaaki Sato | 1990-07-24 |
| 4904856 | Optical pickup device with diffraction sensing | Toshiya Nagahama, Yukio Kurata | 1990-02-27 |
| 4812638 | Focusing error detector and optical data detecting device incorporating the focusing error detector | Nobuo Ogata, Yasuo Nakata, Hideaki Satou, Toshiyuki Tanaka, Etsuji Minami +2 more | 1989-03-14 |
| 4607245 | Gas insulated electromagnetic induction appliance | Yutaka Kuroda, Yuichi Kabayama, Tsugio Watanabe, Tetsuro Hakata, Takahiro Matsumoto | 1986-08-19 |
| 4588972 | Electromagnetic induction apparatus with cooling grooves | Yoshinobu Harumoto, Yuichi Kabayama, Hisao Kan, Tetsuro Hakata, Takahiro Matsumoto | 1986-05-13 |
| 4581477 | Gas-insulated electrical apparatus | Yoshinobu Harumoto, Yuichi Kabayama, Tetsuro Hakata, Takahiro Matsumoto, Tsugio Watanabe | 1986-04-08 |
| 4554805 | Agitating type washing machine | Hiroshi Hirooka, Toshio Fukushi, Yasuo Takeya, Satoshi Nagai | 1985-11-26 |
| 4542633 | Agitating type washing machine | Hiroshi Hirooka, Toshio Fukushi, Yasuo Takeya | 1985-09-24 |
| 4238915 | Tile setting assembly, tile wall and method for building a tile wall | Takeshi Tanizaki | 1980-12-16 |