Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12305003 | Polyamic acid having specific composition, varnish, cured product, and composite material | Takefumi Furuta, Yoshio Furukawa, Yuichi Ishida | 2025-05-20 |
| 11492446 | Semipreg, prepreg, resin composite material, and production methods thereof | Yoshio Furukawa, Takefumi Furuta, Takeshi Chiba, Yuichi Ishida | 2022-11-08 |
| 10815390 | Polyimide resin composition and varnish produced from terminal-modified imide oligomer prepared using 2-phenyl-4,4′-diaminodiphenyl ether and thermoplastic aromatic polyimide prepared using oxydiphthalic acid, polyimide resin composition molded article and prepreg having excellent heat resistance and mechanical characteristic, and fiber-reinforced composite material thereof | Masahiko Miyauchi, Yuichi Ishida, Toshio Ogasawara | 2020-10-27 |
| 10526450 | Terminally modified imide oligomer, varnish, cured products thereof, film, and imide prepreg and fiber-reinforced composite material using these | Takefumi Furuta, Masahiko Miyauchi, Yuichi Ishida | 2020-01-07 |
| 10047246 | Varnish including 2-phenyl-4,4′-diaminodiphenyl ether, imide resin composition having excellent moldability, cured resin molded article having excellent breaking elongation, prepreg thereof, imide prepreg thereof, and fiber-reinforced material thereof having high heat resistance and excellent mechanical strength | Masahiko Miyauchi, Yuichi Ishida, Toshio Ogasawara | 2018-08-14 |
| 10017666 | Polyimide resin composition and varnish produced from terminal-modified imide oligomer prepared using 2-phenyl-4,4′-diaminodiphenyl ether and thermoplastic aromatic polyimide prepared using oxydiphthalic acid, polyimide resin composition molded article and prepreg having excellent heat resistance and mechanical characteristic, and fiber-reinforced composite material thereof | Masahiko Miyauchi, Yuichi Ishida, Toshio Ogasawara | 2018-07-10 |
| 9051430 | Resin-transfer-moldable terminal-modified imide oligomer using 2-phenyl-4,4′diaminodiphenyl ether and having excellent moldability, mixture thereof, varnish containing same, and cured resin thereof and fiber-reinforced cured resin thereof made by resin transfer molding and having excellent heat resistance | Masahiko Miyauchi, Yuichi Ishida, Toshio Ogasawara | 2015-06-09 |
| 8846552 | Soluble terminally modified imide oligomer using 2-phenyl-4, 4′-diaminodiphenyl ether, varnish, cured product thereof, imide prepreg thereof, and fiber-reinforced laminate having excellent heat resistance | Masahiko Miyauchi, Yuichi Ishida, Toshio Ogasawara | 2014-09-30 |
| 7019103 | Polyamic acid oligomer, polyimide oligomer, solution composition, and fiber-reinforced composite material | Kohei Goto, Hideki Ozawa | 2006-03-28 |
| 6281323 | Terminal-modified imide oligomers and cured products thereof | Masatoshi Hasegawa, Hiroaki Yamaguchi | 2001-08-28 |
| 5694769 | Liquid oxidizer immersion type hybrid rocket | Ryojiro Akiba, Nobuhiro Tanatsugu, Masahiro Kohno | 1997-12-09 |