Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686181 | Carbon fibers for reinforcement of cement and cement composite material | Katsumi Takano, Yasushi Katsuta, Hideyuki Nakajima, Yoshikazu Nagata, Tadahiro Kakizawa +3 more | 1997-11-11 |
| 5652058 | Carbon fiber rovings for reinforcement of concrete | Yoshikazu Nagata, Katsumi Takano, Toshio Yonezawa, Junichi Ida, Masaki Iwata | 1997-07-29 |