Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5026496 | Polymer composition useful as viscosity index improver | Shoji Takigawa, Kiyoshi Teranishi, Toshiro Suzuki, Kozo Sakai | 1991-06-25 |
| 4822587 | High modulus pitch-based carbon fiber and method for preparing same | Takashi Hino, Tsutomu Naito, Hiroyuki Kuroda, Eiki Tsushima | 1989-04-18 |
| 4655902 | Optically anisotropic carbonaceous pitch | Takayuki Izumi, Tsutomu Naito, Masuo Shinya | 1987-04-07 |
| 4601813 | Process for producing optically anisotropic carbonaceous pitch | Takayuki Izumi, Tsutomu Naito, Masuo Shinya | 1986-07-22 |