Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6008315 | Manufacturing method for bisphenols and a manufacturing method for polycarbonate | Takato Kimura, Satoru Omori, Ryozo Sato | 1999-12-28 |
| 5886132 | Method for controlling the effective level of catalyst during the preparation of a polycarbonate polymer by transesterification | Godavarthi Satyanarayana Varadarajan, Akio Kanezawa, Satoru Minami | 1999-03-23 |
| 5880248 | Polycarbonate, copolycarbonate resin compositions and preparing method thereof | Takeshi Sakashita, Takashi Nagai | 1999-03-09 |
| 5859172 | Polycarbonate, copolycarbonate resin compositions and preparing method thereof | Takeshi Sakashita, Takashi Nagai | 1999-01-12 |
| 5760156 | Manufacturing method for polycarbonate | Satoshi Inoki, Yoshio Motoyama, Hideto Matsuoka, Hajime Oyoshi, Michio Tanaka +2 more | 1998-06-02 |
| 5717057 | Method of manufacturing polycarbonate | Takeshi Sakashita, Takashi Nagai | 1998-02-10 |
| 5670605 | Copolycarbonate, a copolycarbonate composition, and a method for their manufacture | Takeshi Sakashita, Takashi Nagai, Tetsuji Kodaira | 1997-09-23 |
| 5646233 | Polycarbonate copolycarbonate resin compositions and preparing method thereof | Takeshi Sakashita, Takashi Nagai | 1997-07-08 |
| 5606009 | Copolymerized polycarbonates | Takeshi Sakashita, Takashi Nagai | 1997-02-25 |
| 5606007 | Processes for preparing aromatic polycarbonates | Takeshi Sakashita, Hideyuki Itoi, Takashi Nagai, Kotarou Kishimura | 1997-02-25 |
| 5606008 | Preparation method of polycarbonate resin | Takeshi Sakashita, Takashi Nagai | 1997-02-25 |
| 5550205 | Copolycarbonates and manufacturing method for them | Takeshi Sakashita, Takashi Nagai | 1996-08-27 |
| 5532324 | Copolymeric polycarbonates, a method for their preparation, and compositions thereof | Takeshi Sakashita, Kotaro Kishimura | 1996-07-02 |
| 5525701 | Method for the manufacture of aromatic polycarbonate | Kenichi Tominari, Akio Kanezawa, Takeshi Sakashita, Kimiyoshi Miura | 1996-06-11 |
| 5514767 | Hot-melt polycondensation method for manufacturing a polycarbonate composition | Takeshi Sakashita, Takashi Nagai, Kenichi Tominari, Akio Kanezawa | 1996-05-07 |
| 5510450 | Method of producing copolymerized polycarbonates | Takeshi Sakashita, Takashi Nagai | 1996-04-23 |
| 5502153 | Method for preparing optical-grade polycarbonate compositions | Takeshi Sakashita, Kimiyoshi Miura, Kenichi Tominari, Akio Kanezawa | 1996-03-26 |
| 5496921 | Melt process for polycarbonate with improved heat stability | Takeshi Sakashita | 1996-03-05 |
| 5489655 | Thermosetting resin compositions with low shrinkage | Kenichi Ishiwa | 1996-02-06 |
| 5484875 | Copolymeric polycarbonate production method | Takeshi Sakashita, Kotaro Kishimura, Shuichi Uchimura | 1996-01-16 |
| 5470938 | Copolymeric polycarbonate compositions containing a sulfonic acid compound | Takeshi Sakashita, Kotaro Kishimura | 1995-11-28 |
| 5418315 | Copolymeric polycarbonate production method | Takeshi Sakashita, Kotaro Kishimura, Shuichi Uchimura | 1995-05-23 |
| 5405933 | Copolymerized polycarbonates | Takeshi Sakashita, Takashi Nagai | 1995-04-11 |
| 5401826 | Method for the preparation, of copolymeric polycarbonates | Takeshi Sakashita, Kotaro Kishimura | 1995-03-28 |
| 5384388 | Method of producing copolymerized polycarbonates | Takeshi Sakashita, Takashi Nagai | 1995-01-24 |