Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12395712 | Display system and display method | — | 2025-08-19 |
| 7654883 | Polishing apparatus, polishing head and polishing method | Toshiyuki Kamei, Hidetoshi Takeda, Hiroyuki Tokunaga, Tamoaki Tajiri | 2010-02-02 |
| 7507148 | Polishing apparatus, polishing head and polishing method | Toshiyuki Kamei, Hidetoshi Takeda, Hiroyuki Tokunaga, Tamoaki Tajiri | 2009-03-24 |
| 5965039 | Plasma torch | Hiroyuki Tokunaga | 1999-10-12 |
| 5925267 | Plasma torch having a bypass unit | — | 1999-07-20 |
| 5734144 | Plasma arc welding method and apparatus in which a swirling flow is imparted to a plasma gas to stabilize a plasma arc | Yoshihiro Yamaguchi, Iwao Kurokawa, Mikio Minonishi | 1998-03-31 |
| 5728991 | Plasma arc welding apparatus and welding method using the same | Hiroshi Takada, Kunio Horiai, Iwao Kurokawa, Mikio Minonishi | 1998-03-17 |
| 5726414 | Plasma torch with swirling gas flow in a shielding gas passage | Iwao Kurokawa, Mikio Tokunaga, Hiroyuki Tokynaya | 1998-03-10 |