Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856973 | Scroll-type fluid machine with specific inner curve segments | Takahisa Hirano, Kimiharu Takeda | 1989-08-15 |
| 4678415 | Rotary type fluid machine | Takahisa Hirano | 1987-07-07 |