Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5942138 | Process of producing laminar structure by bonding of sheet metal blanks after preliminary bonding | Hideo Endo, Takeo Nakagawa | 1999-08-24 |
| 5735201 | Apparatus including mutually communicating hydraulic cylinders for even distribution of blank-holding force on pressing machine | Norihisa Hirao, Kazunari Kirii | 1998-04-07 |
| 5726410 | Seam welding process and seam welding apparatus | Toshihiro Fukushima, Masaki Tanzawa, Nobuhide Kondou, Fumiaki Natsumi | 1998-03-10 |
| 4457157 | Pipe end expanding or contracting device utilizing ironing | Masaru Masaki, Yoshinori Ito, Akihiko Inoue | 1984-07-03 |
| 4297867 | Pipe end expanding or contracting process utilizing ironing | Masaru Masaki, Yoshinori Ito, Akihiko Inoue | 1981-11-03 |