Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D956134 | Cutting plotter | Takahisa Umezawa, Kazuhiro Watanabe | 2022-06-28 |
| 10279503 | Cutting pen, cutting plotter, and blade extension amount control method of cutting plotter | Kazuhiro Watanabe, Tsutomu Ohira | 2019-05-07 |
| 10173364 | Control method of embossing apparatus | Kazuhiro Watanabe, Tsutomu Ohira | 2019-01-08 |
| 10011034 | Cutting plotter | Kazuhiro Watanabe | 2018-07-03 |
| D802657 | Roll feeder for cutting plotter | Takahisa Umezawa, Kazuhiro Watanabe | 2017-11-14 |
| D720395 | Cutting plotter | Takahisa Umezawa, Kazuhiro Watanabe | 2014-12-30 |
| 6227236 | Widely variable conductance valve | Satoru Kusumoto | 2001-05-08 |
| 5413139 | Throttle valve | Satoru Kusumoto | 1995-05-09 |