Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10640306 | Polycarbonate resin powder and method for transporting same | Kenji Sasaki, Yukiko Nagao | 2020-05-05 |
| 10030101 | Branched polycarbonate production method | Kazuhiro Sekiguchi, Yukiko Nagao, Masayuki Takahashi, Kenji Sasaki | 2018-07-24 |
| 7517944 | Process for producing polycarbonate | Eizo Saito | 2009-04-14 |
| 6605221 | Method and apparatus for washing polycarbonate/organic solvent solution | Masayuki Takahashi, Tomoyuki Yoshida | 2003-08-12 |
| 5990262 | Process for producing polycarbonates | Akihiro Shishikura, Masahiro Takahashi, Seiji Takahashi, Hiroaki Motegi | 1999-11-23 |
| 5981051 | Method for producing granular polycarbonate prepolymer for solid-state polymerization | Hiroaki Motegi, Akihiro Shishikura | 1999-11-09 |
| 5922826 | Process for producing polycarbonate | Shigeki Kuze, Kenji Tanaka, Kouichi Suga, Yoshikatsu Seino, Akihiro Shishikura | 1999-07-13 |
| 5726223 | Process for production of polymer particles | Masaya Okamoto, Yoshinari Koyama | 1998-03-10 |
| 5583166 | Process for production of polymer particles | Masaya Okamoto, Yoshinari Koyama | 1996-12-10 |
| 5504187 | Polymer granules containing little residual solvent | Masahiro Okamura, Takashi Tsukahara, Masahiro Takahashi | 1996-04-02 |
| 5475084 | Process for the production of polycarbonate powder | Masaya Okamoto | 1995-12-12 |
| 5470937 | Anisotropically oriented phase difference compensation film of a branched polycarbonate | Masaya Okamoto, Shigeki Kuze, Taisuke NAKASHIMA | 1995-11-28 |
| 5349043 | Polycarbonate and process for producing the same | Shigeki Kuze, Ryozo Okumura | 1994-09-20 |
| 5322919 | Process for producing a polycarbonate in inert solvent | Kouichi Kurosawa, Shigeki Kuze, Masaya Okamoto | 1994-06-21 |
| 5306802 | Polycarbonate copolymer and method for production thereof | Ryozo Okumura, Shigeki Kuze | 1994-04-26 |
| 5087660 | Process and apparatus for heat treatment of polymer containing liquid | — | 1992-02-11 |
| 4959456 | Multistage process for producing polycarbonate from oligomer | Takashi Ashida, Koji Yamamoto | 1990-09-25 |