Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5254190 | Tendons for prestressed concrete structures and method of using such tendons | Kiyoshi Hayasaki, Toshikazu Minami, Mutsuhiko Ohnishi | 1993-10-19 |
| 5149385 | Tendons for prestressed concrete structures and method of using such tendons | Kiyoshi Hayasaki, Toshikazu Minami, Mutsuhiko Ohnishi | 1992-09-22 |
| 4929650 | Coating material for tendon for prestressed concrete | Michio Hashimoto, Kiyoshi Hayasaki, Toshikazu Minami, Mutsuhiko Ohnishi, Yohei Suzuki | 1990-05-29 |
| 4590724 | Anchorage for steel wire strand for prestressed concrete | Takeshi Kobayashi, Masakazu Izumi, Jiro Aota | 1986-05-27 |