Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6755919 | Stainless steel tube for automobile structure | Takaaki Toyooka, Akira Yorifuji, Makoto Kitazawa, Motoaki Itadani, Masatoshi Aratani +1 more | 2004-06-29 |
| 6749954 | Welded steel pipe having excellent hydroformability and method for making the same | Takaaki Toyooka, Masatoshi Aratani, Yuji Hashimoto, Akira Yorifuji, Takatoshi Okabe +2 more | 2004-06-15 |
| 6736910 | High carbon steel pipe excellent in cold formability and high frequency hardenability and method for producing the same | Takaaki Toyooka, Akira Yorifuji, Masanori Nishimori, Motoaki Itadani, Takatoshi Okabe +2 more | 2004-05-18 |
| 6723453 | Welded steel pipe having excellent hydroformability and method for making the same | Takaaki Toyooka, Masatoshi Aratani, Yuji Hashimoto, Akira Yorifuji, Takatoshi Okabe +2 more | 2004-04-20 |
| 6682829 | Welded steel pipe having excellent hydroformability and method for making the same | Takaaki Toyooka, Masatoshi Aratani, Yuji Hashimoto, Akira Yorifuji, Takatoshi Okabe +2 more | 2004-01-27 |