Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6107506 | Process for producing 2-(2-hydroxyphenyl) phenylphosphinic acid and derivatives | Takumi Hirayama, Yukinori Kohguchi | 2000-08-22 |
| RE36321 | Heat-sensitive recording material | Toshitake Suzuki, Naoto Arai, Shoji Aoyagi, Masakatu Kitani, Takashi Ishibashi | 1999-09-28 |
| 5705452 | Sulfonyl compound and thermal-sensitive recording medium using the same | Shigeru Oda, Eiji Kawabata | 1998-01-06 |
| 5393332 | Color developer for pressure-sensitive recording sheets | Takashi Ishibashi, Eiji Kawabata, Masato Tanaka, Toshio Kimura | 1995-02-28 |
| 5328884 | Pressure sensitive manifold sheet containing color developer composition | Masato Tanaka, Tomoharu Shiozaki, Shigeru Oda | 1994-07-12 |
| 5250108 | Color developer composition, process for preparing aqueous dispersion thereof and pressure sensitive manifold sheet using thereof | Masato Tanaka, Tomoharu Shiozaki, Shigeru Oda | 1993-10-05 |
| 5248828 | Method for preparing sulfones | Shigeru Oda, Hiroki Tsunomachi, Daishiro Kishimoto | 1993-09-28 |
| 5236988 | Engineering plastic composition and articles made of the same | Kazuo Doyama, Makoto Yamaguchi, Makoto Ohsuga, Akihiro Niki, Hiroki Tsunomachi +1 more | 1993-08-17 |
| 5235024 | Polyester and an article made of the same | Akihiro Niki, Makoto Ohsuga, Toshio Uesaka, Hiroki Tsunomachi, Kazuo Doyama +2 more | 1993-08-10 |
| 5235084 | Method for preparing sulfones | Shigeru Oda, Hiroki Tsunomachi, Daishiro Kishimoto | 1993-08-10 |
| 5204190 | Method for preparing aqueous dispersion of developer and pressure-sensitive recording paper | Shigeru Oda, Tomoharu Shiozaki, Masato Tanaka | 1993-04-20 |
| 5191057 | Polyester and an article made of the same comprising a p-quaterphenyl derivative | Akihiro Niki, Makoto Ohsuga, Toshio Uesaka, Hiroki Tsunomachi, Kazuo Doyama +2 more | 1993-03-02 |
| 5164001 | Method for preparing aqueous dispersion of developer and pressure-sensitive recording paper | Shigeru Oda, Tomoharu Shiozaki, Masato Tanaka | 1992-11-17 |
| 5143890 | Heat sensitive recording material | Tetsuo Tsuchida, Yukihiro Abe, Tomoyuki Okimoto | 1992-09-01 |
| 5118443 | Developer for pressure-sensitive recording sheets, aqueous dispersion of the developer and method for preparing the developer | Takashi Ishibashi, Tomoharu Shiozaki, Tetsuo Shiraishi | 1992-06-02 |
| 5107006 | Clathrate compounds of nuclear-substituted salicyclic acid salts | — | 1992-04-21 |
| 5049685 | Nuclear substituted salicylic acids and their salts | — | 1991-09-17 |
| 5041604 | Process for producing di(aryloxy)alkane | Masakatu Kitani, Takashi Ishibashi | 1991-08-20 |
| 5019548 | Heat sensitive recording material | Toshitake Suzuki, Fumio Seyama, Shuki Okauchi, Masakatu Kitani, Takashi Ishibashi | 1991-05-28 |
| 5011879 | Engineering plastic composition and an article made of the same | Toshio Uesaka, Akihiro Niki, Makoto Ohsuga, Hiroki Tsunomachi, Makoto Yamaguchi +2 more | 1991-04-30 |
| 4973720 | Process for the preparation of p-benzoquinone | Kenichi Ikemoto, Hiroki Tsunomachi, Katsuya Sakaguchi | 1990-11-27 |
| 4950330 | Aqueous dispersion of a developer for pressure-sensitive recording sheet and a process for producing the same | Shouichi Murata, Eiji Kawabata, Tomoharu Shiozaki, Tetsuo Shiraishi | 1990-08-21 |
| 4618693 | Cyclic organic phosphorus compound and process for producing same | Masakatu Kitani, Hiroyuki Ohishi | 1986-10-21 |
| 4542395 | Heat-sensitive recording material | Masakatu Kitani, Takashi Ishibashi, Naoto Arai, Takeshi Murakami, Toshitake Suzuki | 1985-09-17 |
| 4535190 | Phenolic compounds and a heat-sensitive recording material containing the same | Naoto Arai, Takeshi Murakami, Toshitake Suzuki, Masakatu Kitani, Takashi Ishibashi | 1985-08-13 |