Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5720807 | Hydraulic composition and process for preparing the same | Tatsuo Izumi, Hotaka Yamamuro, Akira Kurara | 1998-02-24 |
| 5674316 | Hydraulic composition | Tatsuo Izumi, Hotaka Yamamuro, Takaaki Tadokoro | 1997-10-07 |