Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6942541 | Polishing apparatus | Tetsuji Togawa, Kunihiko Sakurai | 2005-09-13 |
| 6283822 | Polishing apparatus | Tetsuji Togawa, Kunihiko Sakurai | 2001-09-04 |
| 5985090 | Polishing cloth and polishing apparatus having such polishing cloth | Fujio Aoyama, Koji Kato, Tamami Takahashi | 1999-11-16 |
| 5830045 | Polishing apparatus | Tetsuji Togawa, Kunihiko Sakurai | 1998-11-03 |
| 5716264 | Polishing apparatus | Norio Kimura, You Ishii, Masayoshi Hirose | 1998-02-10 |
| 5651725 | Apparatus and method for polishing workpiece | You Ishii, Tamami Takahashi | 1997-07-29 |
| 4943214 | Two-shaft type rotary machine having a tip circle diameter to shaft diameter within a certain range | Yoshihiro Niimura, Katsuaki Usui | 1990-07-24 |