Issued Patents All Time
Showing 51–75 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6733930 | Photomask blank, photomask and method of manufacture | Tsutomu Shinagawa, Tamotsu Maruyama, Mikio Kojima, Yukio Inazuki, Satoshi Okazaki | 2004-05-11 |
| 6727027 | Photomask blank and photomask | Tetsushi Tsukamoto, Tamotsu Maruyama, Yukio Inazuki, Tsutomu Shinagawa, Satoshi Okazaki | 2004-04-27 |
| 6666957 | Magnetron sputtering system and photomask blank production method based on the same | Masataka Watanabe, Satoshi Okazaki, Ken Ohashi, Hideki Kobayashi | 2003-12-23 |
| 6641958 | Phase shift mask blank, phase shift mask, and methods of manufacture | Yukio Inazuki, Tamotsu Maruyama, Mikio Kojima, Masataka Watanabe, Satoshi Okazaki | 2003-11-04 |
| 6589699 | Photomask blank and photomask | Yukio Inazuki, Satoshi Okazaki | 2003-07-08 |
| 6514642 | Phase shift mask and method of manufacture | Satoshi Okazaki, Tamotsu Maruyama, Yukio Inazuki, Shinichi Kohno | 2003-02-04 |
| 6503669 | Photomask blank, photomask and method of manufacture | Yukio Inazuki, Tamotsu Maruyama, Satoshi Okazaki | 2003-01-07 |
| 6503668 | Phase shift mask blank, phase shift mask, and method of manufacture | Yukio Inazuki, Tamotsu Maruyama, Satoshi Okazaki | 2003-01-07 |
| 6451489 | Phase shift photomask | — | 2002-09-17 |
| 6352801 | Phase shift mask and making process | Satoshi Okazaki, Tamotsu Maruyama, Yukio Inazuki | 2002-03-05 |
| 6117374 | Control method for powder feed apparatus | Kazutami Takahashi, Kiyoshi Ogawa | 2000-09-12 |
| 5861180 | Powder feed apparatus and control method thereof | Kazutami Takahashi, Kiyoshi Ogawa | 1999-01-19 |
| 5743323 | Apparatus for continuous casting | Haruo Ohguro, Toshihiro Kosuge, Katsuhiko Kawamoto, Ryuuzou Hanzawa, Shogo Matsumura +6 more | 1998-04-28 |
| 5720861 | Magnetic recording medium | Katsushi Tokunaga, Yoshio Tawara | 1998-02-24 |
| 5643650 | Magneto-optical recording medium | Yoshio Tawara, Katsushi Tokunaga, Yoshiaki Shimizu | 1997-07-01 |
| 5591502 | Magnetic recording medium | Katsushi Tokunaga, Yoshio Tawara | 1997-01-07 |
| 5582897 | Magnetic recording medium | Katsushi Tokunaga, Yoshio Tawara | 1996-12-10 |
| 5554303 | Magnetic recording medium preparation | Katsushi Tokunaga, Yoshio Tawara, Noboru Tamai, Yasuaki Nakazato | 1996-09-10 |
| 5521781 | Substrate for magnetic recording medium | Yasuaki Nakazato, Toyofumi Aoki, Itsuo Kuroyanagi | 1996-05-28 |
| 5514468 | Magneto-optical recording medium | Katsushi Tokunaga, Yoshio Tawara, Yoshiaki Shimizu, Tadao Nomura | 1996-05-07 |
| 5360054 | Method and apparatus for performing horizontal continuous casting | Hatsuyoshi Kumashiro | 1994-11-01 |
| 5335715 | Method and apparatus for continuous casting | Haruo Ohguro, Toshihiro Kosuge, Ryuuzou Hanzawa, Shogo Matsumura, Hiroyuki Kawai +3 more | 1994-08-09 |
| 5293925 | Method of and apparatus for withdrawing strand in horizontal continuous casting installation | Hatsuyoshi Kumashiro, Toshio Iida, Sadaaki Murakawa, Makoto Ueda, Yoshikazu Nishi +6 more | 1994-03-15 |
| 4923768 | Fuel cell power generation system | Hideo Nishigaki | 1990-05-08 |
| 4695333 | Iron-chromium-base spinodal decomposition-type magnetic (hard or semi-hard) alloy | Kiyoshi Inoue | 1987-09-22 |