Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6732547 | Method for the treating stainless steel refining slag | Hisahiro Matsunaga, Chikashi Tada, Masato Kumagai | 2004-05-11 |
| 6521040 | Method for processing chromium oxide-containing substances in large quantities, method for utilizing the processed substances, and products comprising the processed substances | Hisahiro Matsunaga, Masato Kumagai, Hiroyuki Tobo, Yasuo Kishimoto | 2003-02-18 |
| 6336967 | Method for processing chromium oxide-containing substances in large quantities, method for utilizing the processed substances, and products comprising the processed substances | Hisahiro Matsunaga, Masato Kumagai, Hiroyuki Tobo, Yasuo Kishimoto | 2002-01-08 |
| 5429655 | System for removing non-metallic foreign matter in molten metal | Shigeru Ogura, Masayuki Onishi, Hidenari Kitaoka, Mitsuru Sakurai, Yozo Tanino +6 more | 1995-07-04 |
| 5375648 | Apparatus and method for continuous casting of steel | Akira Idogawa, Nagayasu Bessho, Kenichi Sorimachi, Tetsuya Fujii | 1994-12-27 |
| 5356454 | Mold powder for continuous casting | Seiji Itoyama, Hidenari Kitaoka, Kenichi Sorimachi, Saburo Moriwaki, Sumio Yamada +4 more | 1994-10-18 |
| 5221326 | Method of producing ultra-low-carbon steel | Koji Yamaguchi, Yasuo Kishimoto, Masaru Washio, Kazuhisa Hamagami, Hiroshi Nishikawa | 1993-06-22 |
| 5152831 | Method of producing ultra-low-carbon steel | Koji Yamaguchi, Yasuo Kishimoto, Masaru Washio, Kazuhisa Hamagami, Hiroshi Nishikawa | 1992-10-06 |
| 5106411 | Method of and apparatus for removing non-metallic inclusions in molten metal | Yuji Miki, Hidenari Kitaoka, Tetsuya Fujii, Shuji Takeuchi, Kenichi Sorimachi +1 more | 1992-04-21 |
| 5083687 | Nozzle for continuous casting and method of producing | Mitsuo Saito, Kenichi Sorimachi | 1992-01-28 |
| 5071471 | Method of and apparatus for removing non-metallic inclusions from molten metal | Yuji Miki, Hidenari Kitaoka, Shuji Takeuchi, Kenichi Sorimachi | 1991-12-10 |
| RE32590 | Methods for obtaining high-purity carbon monoxide | Tetsuya Fujii, Shigeo Matsui, Shigeki Hayashi | 1988-02-02 |
| 4596600 | Steel-making process in converter | Tetsuya Fujii, Hideo Nakamura, Yasuhiro Habu, Takuo Imai | 1986-06-24 |
| 4592778 | Steelmaking of an extremely low carbon steel in a converter | Tetsuya Fujii, Nobuo Harada, Shuji Takeuchi, Yoshiei Kato, Hideo Nakamura +1 more | 1986-06-03 |
| 4539020 | Methods for obtaining high-purity carbon monoxide | Tetsuya Fujii, Shigeo Matsui, Shigeki Hayashi | 1985-09-03 |
| 4508571 | Mold additives for use in continuous casting | Hakaru Nakato, Yasuhiro Habu, Toshihiko Emi, Masanori Kodama, Takao Koshikawa +2 more | 1985-04-02 |
| 4436287 | Method for protecting tuyeres for refining a molten iron | Hideo Nakamura, Nobuo Harada, Tetsuya Fujii, Toshihiko Emi | 1984-03-13 |