Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 6001891 | Biodegradable aliphatic polyester elastomer and preparation process of same | Chojiro Higuchi, Takeshi Kashima, Masanobu Ajioka, Yuji Terado | 1999-12-14 |
| 5817728 | Preparation of degradable copolymers | Chojiro Higuchi, Hiroshi Suizu, Takeshi Kashima, Yuji Terado, Ikumi Kitada +3 more | 1998-10-06 |
| 5726340 | Method of producing aromatic carbonate | Katsufumi Kujira, Takahiro Yoneyama, Yuji Ohgomori | 1998-03-10 |
| 5679767 | Purification process of aliphatic polyester | Hiroshi Suizu, Masanobu Ajioka, Akihiro Yamaguchi | 1997-10-21 |
| 5498789 | Method of producing aromatic carbonate | Hidekazu Miyagi, Yuji Ohgomori, Hiroshi Iwane | 1996-03-12 |
| 5496923 | Purification process of aliphatic polyester | Hiroshi Suizu, Masanobu Ajioka, Akihiro Yamaguchi | 1996-03-05 |
| 5336749 | Alicyclic diamines, alicyclic diisocyanates and polyisocyanato-isocyanurates and method for the preparation thereof | Ryuji Haseyama, Kouzou Hayashi, Katsuyoshi Sasagawa, Kazuyuki Kuroda, Taisaku Kano +1 more | 1994-08-09 |
| 5324704 | Fluoran compounds, crystalline toluene adducts thereof, recording material comprising same and process for their preparation | Masakatsu Nakatsuka, Atsuo Otsuji, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1994-06-28 |
| 5231069 | Fluoran compound, heat sensitive recording materials comprising fluoran compound | Masakatsu Nakatsuka, Atsuo Otsuji, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1993-07-27 |
| 5220038 | Fluoran compounds, crystalline toluene adducts thereof, recording material comprising same and process for their preparation | Masakatsu Nakatsuka, Atsuo Otsuji, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1993-06-15 |
| 5210286 | Alicyclic diamines, alicyclic diisocyanates and polyisocyanato-isocyanurates and method for the preparation thereof | Ryuji Haseyama, Kouzou Hayashi, Katsuyoshi Sasagawa, Kazuyuki Kuroda, Taisaku Kano +1 more | 1993-05-11 |
| 5208209 | Fluoran compounds, process for preparation thereof and recording materials comprising said compound | Atsuo Otsuji, Masakatsu Nakatsuka, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1993-05-04 |
| 5194632 | Fluoran compound, useful in heat sensitive recording materials | Masakatsu Nakatsuka, Atsuo Otsuji, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1993-03-16 |
| 5126426 | Alicyclic diamines, alicyclic diisocyanates and polyisocyanato-isocyanurates and method for the preparation thereof | Ryuji Haseyama, Kouzou Hayashi, Katsuyoshi Sasagawa, Kazuyuki Kuroda, Taisaku Kano +1 more | 1992-06-30 |
| 5087706 | Fluoran compounds, process for preparation thereof and recording materials comprising said compound | Atsuo Otsuji, Masakatsu Nakatsuka, Kiyoharu Hasegawa, Akihiro Yamaguchi | 1992-02-11 |
| 4997874 | Aqueous suspension and preparation method thereof | Makoto Asano, Kiyoharu Hasegawa, Akihiro Yamaguchi, Keizaburo Yamaguchi, Yoshimitsu Tanabe +1 more | 1991-03-05 |
| 4988972 | Method for transmitting and receiving signals over transmission power lines | — | 1991-01-29 |
| 4760108 | Microcapsule-containing water-base coating formulation and copying and/or recording material making use of said coating formulation | Makoto Asano, Kiyoharu Hasegawa, Takamine Yamaguchi | 1988-07-26 |
| 4744093 | Method of detecting phase pulse signals from an AC distribution line | Yukio Arai, Akihiko Koyama | 1988-05-10 |
| 4497293 | Internal combustion engine of motorcycle | Wataru Annaka | 1985-02-05 |