Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6015628 | Organic composite coated steel sheet with good press formability and perforation corrosion resistance | Kazuya Urata, Naoto Yoshimi, Masaaki Yamashita, Yasuhiko Haruta | 2000-01-18 |
| 5795660 | Organic composite coated steel sheet having a high corrosion resistance in a rust-contaminated environment | Naoto Yoshimi, Takashi Ishiyama, Masaaki Yamashita, Yasuhiko Haruta | 1998-08-18 |
| 5429880 | Organic composite coated steel sheet and a process for manufacturing the same | Masaaki Yamashita, Toyofumi Watanabe, Yoshio Kikuta, Kimio Kobori, Hideaki Ogata | 1995-07-04 |
| 5110689 | Multi-layered steel sheets | Tsutomu Watanabe, Masaaki Yamashita, Yoshiaki Miyosawa, Tadashi Nishimoto | 1992-05-05 |
| 4970126 | Highly corrosion-resistant, multi-layer coated steel sheets | Takeshi Adaniya, Masaaki Yamashita, Norio Nikaido, Yoshiaki Miyosawa, Tadashi Nishimoto +1 more | 1990-11-13 |
| 4889775 | Highly corrosion-resistant surface-treated steel plate | Takeshi Adaniya, Masaaki Yamashita, Akira Enatsu, Norio Nikaido, Yoshiaki Miyosawa +1 more | 1989-12-26 |
| 4775600 | Highly corrosion-resistant surface-treated steel plate | Takeshi Adaniya, Masaaki Yamashita, Akira Enatsu, Norio Nikaido, Yoshiaki Miyosawa +2 more | 1988-10-04 |