Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4891064 | Method of melting cold material including iron | Kazushige Umezawa, Tatsuro Kuwabara, Tetsuya Oh-hara, Tsuzuru Nuibe | 1990-01-02 |
| 4455849 | Press-rolling process for producing a metal tubular product | Shigeru Uchida, Kazuo Watanabe, Minoru Kawaharada | 1984-06-26 |