Issued Patents All Time
Showing 51–66 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371170 | Polycarbonate production method | Takeshi Sakashita | 1994-12-06 |
| 5364926 | Preparing method of polycarbonate resin compounds for the optical use | Takeshi Sakashita, Kimiyoshi Miura, Kenichi Tominari, Akio Kanezawa | 1994-11-15 |
| 5324809 | Melt catalytic preparation of copolymeric polycarbonate from hydroquinone | Takeshi Sakashita, Kotaro Kishimura, Shuichi Uchimura | 1994-06-28 |
| 5306801 | Catalytic melt preparation of polycarbonate with subsequent addition of sulfonic acid compound | Takeshi Sakashita | 1994-04-26 |
| 5286834 | Melt preparation of copolycarbonate with alkaline compound catalyst and boric acid compound catalyst | Takeshi Sakashita, Kotaro Kishimura | 1994-02-15 |
| 5276129 | Polycarbonate containing terminal hydroxy groups, low sodium and chlorine content | Takeshi Sakashita | 1994-01-04 |
| 5276109 | Optical polycarbonate compositions | Takeshi Sakashita, Takashi Nagai | 1994-01-04 |
| 5187242 | Polycarbonate, polyestercarbonate resin compounds and preparing methods thereof | Takeshi Sakashita, Takashi Nagai, Kotarou Kishimura | 1993-02-16 |
| 5151491 | Catalytic melt condensation preparation of polycarbonate | Takeshi Sakashita | 1992-09-29 |
| 5142018 | Process for preparing polycarbonates | Takeshi Sakashita | 1992-08-25 |
| 5097002 | Melt, catalytic process for preparing polycarbonates from carbonic acid diester | Takeshi Sakashita | 1992-03-17 |
| 5068400 | Fluorine-containing mono- or poly-alkylene glycol and method for producing same | Masahide Tanaka, Tokinori Agou, Masahiro KUWAHARA, Takeshi Sakashita, Masaru Sudou | 1991-11-26 |
| 5057585 | Oxygen-permeable article of fluorinated hydrocarbon group-grafted (meth)acrylate polymers | Tokinori Agou, Takeshi Sakashita, Masaru Sudo, Masahiro Kuwabara, Masahide Tanaka | 1991-10-15 |
| 5053281 | Aromatic polyamide and gas-barrier property imparting agent composed of it | Takeshi Sakashita | 1991-10-01 |
| 5026817 | Catalytic process for preparing polycarbonates from carbonic acid | Takeshi Sakashita | 1991-06-25 |
| 4957985 | Fluorine-substituted hydrocarbon group grafted (meth)acrylate polymers | Tokinori Agou, Takeshi Sakashita, Masaru Sudo, Masahiro Kuwabara, Masahide Tanaka | 1990-09-18 |