Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5223031 | Cement/asphalt mixtures and processes for preparation of the same | Yutaka Ando, Minoru Makita, Akira Ito | 1993-06-29 |
| 4266980 | Expansive solidifying material | Akira Chudo, Kouji Kataoka | 1981-05-12 |