Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9968492 | Method of and apparatus for manufacturing bloomed fiber material | Shingo Nagata, Masato Shigematsu | 2018-05-15 |
| 9204669 | Cigarette filter, process for producing the same, and cigarette | Hiroki Taniguchi, Masato Shigematsu, Takashi Ikebe | 2015-12-08 |
| 8887359 | Apparatus for manufacturing opening matter of long-sized fiber tow | Masato Shigematsu | 2014-11-18 |
| 4939681 | Circuit simulation method for semiconductor device including field effect transistors | Goichi Yokomizo, Akio Yajima, Akihisa Maruyama, Hirofumi Johnishi | 1990-07-03 |