Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE45821 | Zinc-based metal plated steel sheet | Yoichi Makimizu, Sakae Fujita, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka +5 more | 2015-12-22 |
| 9090952 | High-strength cold-rolled steel sheet and method for producing the same | Yoichi Makimizu, Yoshitsugu Suzuki, Mai Miyata, Junichiro Hirasawa, Shinji Otsuka +2 more | 2015-07-28 |
| 8911574 | Method for manufacturing high-Si cold rolled steel sheet having excellent chemical conversion properties | Shinji Ootsuka, Junichiro Hirasawa, Hideyuki Takahashi, Hideki Nagano | 2014-12-16 |
| 8668789 | Method for manufacturing of high strength cold rolled steel sheet of excellent phosphatability | Junichiro Hirasawa, Hiroki Nakamaru, Kohei Hasegawa, Hideyuki Tsurumaru, Keita Yonetsu +2 more | 2014-03-11 |
| 8623514 | Zinc-based metal plated steel sheet | Yoichi Makimizu, Sakae Fujita, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka +5 more | 2014-01-07 |
| 8268095 | Method of manufacturing hot dip galvannealed steel sheet and hot dip galvannealed steel sheet | Hiroyuki Masuoka, Shoichiro Taira, Yoshiharu Sugimoto, Masayasu Nagoshi, Wataru Tanimoto | 2012-09-18 |
| 8221900 | Zinc-based metal plated steel sheet | Yoichi Makimizu, Sakae Fujita, Masahiko Tada, Shinji Ootsuka, Hiroyuki Masuoka +5 more | 2012-07-17 |
| 8012599 | Surface-treated steel sheet with excellent corrosion resistance and method for manufacturing same | Tatsuya Miyoshi, Kenichi Sasaki, Akira Matsuzaki, Kazuhisa Okai, Takao Ooshima +3 more | 2011-09-06 |
| 7517591 | Highly corrosion-resistant surface-treated steel sheet and method for producing same | Tatsuya Miyoshi, Kenichi Sasaki, Akira Matsuzaki, Kazuhisa Okai, Takao Ooshima +3 more | 2009-04-14 |
| 7291402 | Surface-treated steel sheets of good white rust resistance, and method for producing them | Okai Kazuhisa, Akira Matsuzaki, Takahiro Kubota, Masaaki Yamashita, Hisato Noro +8 more | 2007-11-06 |
| 6562474 | Coated steel sheet having excellent corrosion resistance and method for producing the same | Satoru Ando, Masaru Sagiyama, Akihiko Furuta, Masaaki Yamashita, Akira Matsuzaki +6 more | 2003-05-13 |
| 6015628 | Organic composite coated steel sheet with good press formability and perforation corrosion resistance | Kazuya Urata, Takahiro Kubota, Masaaki Yamashita, Yasuhiko Haruta | 2000-01-18 |
| 5795660 | Organic composite coated steel sheet having a high corrosion resistance in a rust-contaminated environment | Takahiro Kubota, Takashi Ishiyama, Masaaki Yamashita, Yasuhiko Haruta | 1998-08-18 |
| 5641578 | Weldable black steel sheet | Masaaki Yamashita, Toshiyuki Ookuma, Tatsuya Miyoshi, Toyofumi Watanabe, Tsutomu Watanabe | 1997-06-24 |
| 5609968 | Weldable colored steel sheet | Toyofumi Watanabe, Masaaki Yamashita, Toshiyuki Ookuma, Tatsuya Miyoshi | 1997-03-11 |
| 5589279 | Weldable black steel sheet | Toyofumi Watanabe, Masaaki Yamashita | 1996-12-31 |
| 5556715 | Weldable colored steel sheet | Toyofumi Watanabe, Masaaki Yamashita | 1996-09-17 |
| 5387473 | Weldable black steel sheet with low-gloss appearance | Masaaki Yamashita, Toyofumi Watanabe | 1995-02-07 |