Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12424894 | Phase ring support structure and rotating electric machine | Tatsuya Okuda | 2025-09-23 |
| 9752030 | Polyamic acid and polyimide, processes for the production of same, compositions containing same, and uses thereof | Kenichi Fukukawa, Masaki Okazaki, Yoshihiro Sakata, Ichiro Fujio | 2017-09-05 |
| 9540487 | Polyimide composite material and film thereof | Kenichi Fukukawa, Yoshihiro Sakata, Ichiro Fujio | 2017-01-10 |
| 9339992 | Low-thermal-expansion block polyimide, precursor thereof, and use thereof | Kenichi Fukukawa, Tatsuhiro Urakami, Yoshihiro Sakata, Masaki Okazaki | 2016-05-17 |
| 7666573 | Positive photosensitive resin composition and method for forming pattern | Masaki Okazaki, Hitoshi Ohnishi | 2010-02-23 |
| 6734276 | Polyimide and circuit substrate comprising the same | Katsuji Watanabe, Takahisa Oguchi | 2004-05-11 |
| 6710160 | Polyamic acid, polyimide, process for producing these, and film of the polyimide | Katsuji Watanabe, Hideaki Oikawa, Hisato Ito | 2004-03-23 |
| 6103860 | Fluorine-containing polyamide | Tomomi Yoshimura, Atsushi Shibuya, Yoshihiro Sakata, Hideaki Oikawa, Masahiro Ohta | 2000-08-15 |
| 6080833 | Low-birefringent organic optical component and a spirobiindan polymer | Atsuo Otsuji, Keisuke Takuma, Rihoko Suzuki, Tatsuhiro Urakami, Toshihiro Motoshima +8 more | 2000-06-27 |
| 5990261 | Organic optical component | Tomomi Yoshimura, Atsushi Shibuya, Yoshihiro Sakata, Hideaki Oikawa, Keisuke Takuma +1 more | 1999-11-23 |
| 5916488 | Polyimide resin compositions for optical filters | Keisuke Takuma, Kazuhiro Seino, Tsutami Misawa, Shoji Tamai | 1999-06-29 |
| 5892061 | Process for preparing isoimides | Kan Ikeda, Shoji Tamai | 1999-04-06 |
| 5868968 | Polyimide resin compositions for optical filters | Keisuke Takuma, Kazuhiro Seino, Tsutami Misawa, Shoji Tamai | 1999-02-09 |
| 5763537 | Polyimide based resin composition | Tomomi Yoshimura, Shoji Tamai, Akihiro Yamaguchi | 1998-06-09 |
| 5719256 | Process for preparing polycondensation polymer compound | Shoji Tamai, Yukiko Mori, Kenichi Goto, Katsuji Watanabe, Osamu Kohgo +5 more | 1998-02-17 |
| 5508377 | Polyimide | Yuichi Okawa, Shoji Tamai, Akihiro Yamaguchi | 1996-04-16 |
| 5506291 | Polyimide resin composition having excellent fatigue resistance and injection molded article of same | Yuichi Okawa, Yoshihiro Sakata, Katsuaki Iiyama, Shoji Tamai, Akihiro Yamaguchi | 1996-04-09 |
| 5494996 | Polyimide resin composition | Shoji Tamai, Yuichi Okawa, Yoshihiro Sakata, Hideaki Oikawa, Keizaburo Yamaguchi +3 more | 1996-02-27 |
| 5484880 | Polyimide | Yuichi Okawa, Shoji Tamai, Mitsunori Matsuo, Tsutomu Ishida, Keizaburo Yamaguchi +1 more | 1996-01-16 |
| 5480965 | Readily soluble, amorphous polyimide, and preparation process of same | Yuichi Okawa, Hideaki Oikawa, Tadashi Asanuma, Yuko Ishihara, Mitsunori Matsuo +3 more | 1996-01-02 |
| 5470943 | Polyimide | Yoshihiro Sakata, Yuichi Okawa, Shoji Tamai, Tsutomu Ishida, Mitsunori Matsuo +2 more | 1995-11-28 |
| 5371168 | Amorphous polyimide powder, preparation process of the powder, and heat-resistant adhesive and bonding method by use of the powder | Shoji Tamai, Akihiro Yamaguchi | 1994-12-06 |
| 5354839 | Polyimide and preparation process of same | Yoshihiro Sakata, Toshiyuki Kataoka, Yuichi Okawa, Hideaki Oikawa, Tadashi Asanuma +4 more | 1994-10-11 |
| 5354890 | Aromatic diamine intermediates useful in the preparation of polyimides | Shoji Tamai, Yuichi Okawa, Yuko Ishihara, Keizaburo Yamaguchi, Akihiro Yamaguchi | 1994-10-11 |
| 5283313 | Readily processable polyimide, preparation process of polyimide, and resin composition of polyimide | Shoji Tamai, Akihiro Yamaguchi | 1994-02-01 |