Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10017881 | Polyacrylonitrile-based copolymer, polyacrylonitrile-based precursor fiber for carbon fiber, carbon fiber bundles, process for producing stabilized fiber bundles, and process for producing carbon fiber bundles | Norifumi Hirota, Naoki Aoyama, Naomasa Matsuyama, Takeshi Nii, Yasuyuki Fujii +2 more | 2018-07-10 |
| 8569408 | Acrylonitrile copolymer and method for producing the same, acrylonitrile copolymer solution and polyacrylonitrile precursor fiber for carbon fiber and method for producing the same | Norifumi Hirota, Naomasa Matsuyama, Takeshi Nii, Harumi Shibatani | 2013-10-29 |