Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11021571 | Manufacturing method for high molecular weight aromatic polycarbonate resin | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2021-06-01 |
| 10927216 | Manufacturing method for high molecular weight aromatic polycarbonate resin | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2021-02-23 |
| 10894860 | High molecular weight aromatic polycarbonate resin manufacturing method | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2021-01-19 |
| 10343288 | Machining method and machining system | Hideo Kawahara, Masamichi Yamaguchi | 2019-07-09 |
| 10053537 | High-fluidity polycarbonate copolymer, process for production highly polymerized aromatic polycarbonate resin and aromatic polycarbonate compound | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2018-08-21 |
| 9822218 | Process for producing a high molecular-weight aromatic polycarbonate resin | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +3 more | 2017-11-21 |
| 9701788 | Method for producing branched aromatic polycarbonate resin | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2017-07-11 |
| 9546249 | Process for preparing highly polymerized aromatic polycarbonate resin | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +3 more | 2017-01-17 |
| 9499661 | Process for producing highly polymerized aromatic polycarbonate resin | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2016-11-22 |
| 9458290 | Process for preparing highly polymerized aromatic polycarbonate resin | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2016-10-04 |
| 9428608 | Aromatic polycarbonate resin composition | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2016-08-30 |
| 9353216 | High-fluidity polycarbonate copolymer, process for production highly polymerized aromatic polycarbonate resin and aromatic polycarbonate compound | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2016-05-31 |
| 9243106 | Method for continuous production of high molecular weight polycarbonate resin | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2016-01-26 |
| 9221740 | Method for producing carbonate compound and method for producing aromatic polycarbonate | Hidekazu Okamoto, Atsushi Fujimori, Toru Takahashi, Keisuke Shimokawa | 2015-12-29 |
| 8969505 | Process for manufacturing branched aromatic polycarbonate resin with desired degree of branching | Yoshinori Isahaya, Hidefumi Harada, Maki Ito, Jun Hayakawa, Takehiko Isobe +2 more | 2015-03-03 |
| 7951877 | Process for the production of vinyl compound | Jun Nakano, Takeru Horino, Makoto Miyamoto, Yasumasa Norisue | 2011-05-31 |
| 7193030 | Acid anhydride and polyimide using the same | Daisuke Ohno, Kenji Ishii, Yasumasa Norisue, Masamitchi Mizukami | 2007-03-20 |
| 5457174 | Method for preparing polycarbonates by transesterification in a steel reactor | Katsushige Hayashi, Mitsuhiko Masumoto, Masayuki Nakajima, Takuya Hasaki, Masahiko Ishikawa | 1995-10-10 |
| 4954586 | Soft ocular lens material | Nobuyuki Toyoshima, Takanori Shibata, Ichiro Ando, Noriko Iwata, Hiroshi Yoshioka +2 more | 1990-09-04 |
| 4920180 | Highly water-absorptive ocular lens material | Nobuyuki Toyoshima, Takanori Shibata | 1990-04-24 |