Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6928847 | Roll forming system for forming flanges in strip material | Natsuko Hirayanagi, Harumi Obata | 2005-08-16 |
| 6539628 | Formed strip and roll forming | Natsuko Hirayanagi, Harumi Obata | 2003-04-01 |
| 6423423 | Formed strip and roll forming | Natsuko Hirayanagi, Harumi Obata | 2002-07-23 |
| 6418614 | Cutting apparatus for roll-formed product of roll-forming unit | Harumi Obata | 2002-07-16 |