Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5817872 | Copper catalyst for the hydration of nitrile and preparation thereof | Hiroshi Ohe, Shinichiro Ichikawa, Hisaharu Kuboyama, Satoru Miyazoe | 1998-10-06 |
| 5321186 | Method for preparing unsaturated compounds | Kazuhiro Terada | 1994-06-14 |
| 5220049 | Method for preparing unsaturated compounds | Kazuhiro Terada | 1993-06-15 |
| 5220090 | Method for preparing unsaturated compounds | Kazuhiro Terada | 1993-06-15 |
| 5198579 | Catalyst for oxidizing methacrolein and method for preparing methacrylic acid | Nobuhiko Horiuchi, Jun Kitagawa, Masami Murakami, Kazunori Kawahara, Hirofumi Io | 1993-03-30 |
| 5175308 | Preparation process of indoles | Makoto Kotani | 1992-12-29 |
| 5144090 | Method for preparing acrolein or methacrolein | Tokio Nagayama, Nobuhiko Horiuchi, Jun Kitagawa, Kazunori Kawahara, Masami Murakami | 1992-09-01 |
| 5138086 | Method for preparing .alpha.,.beta.-unsaturated nitriles | Sinji Tokunoh | 1992-08-11 |
| 4937353 | Preparation process for indoles | Akihide Kudoh, Makoto Kotani, Kazuhiro Terada, Takeshi Tsuda, Shinji Kiyono | 1990-06-26 |
| 4916236 | Preparation of indoles by cyclization | Akihide Kudoh, Makoto Kotani, Kazuhiro Terada, Takeshi Tsuda, Shinji Kiyono | 1990-04-10 |
| 4831158 | Preparation process indoles | Tomoyuki Ueno, Takashi Jimbo, Makoto Kotani, Kazuhiro Terada, Shinji Kiyono | 1989-05-16 |
| 4668283 | Magnetic powder and production process thereof | Takeshi Tsuda | 1987-05-26 |
| 4495362 | Process for preparing alkyl nitroacetates | Yoichi Hosono | 1985-01-22 |
| 4476310 | Process for the preparation of indoles | Fujio Matsuda, Tadamitsu Kiyoura, Kazuhiro Terada | 1984-10-09 |
| 4474969 | Preparation process of indole | Kazuhiro Terada | 1984-10-02 |
| 4473698 | Process for the preparation of indoles | Fujio Matsuda, Takazo Kato | 1984-09-25 |
| 4464539 | Process for producing .alpha.,.beta.-unsaturated carboxylic acids or esters thereof | Masao Hashimoto | 1984-08-07 |
| 4436916 | Process for the preparation of indoles | Fujio Matsuda, Takazo Kato, Kazuhiro Terada, Yasuo Kogure | 1984-03-13 |
| 4404063 | Method for the separation of indole | — | 1983-09-13 |
| 4345101 | Process for purifying an aqueous solution of acrylamide | Shiro Asano, Kohei Shizuka, Yoshihiko Kambara, Junji Mikami, Hiroshi Kato | 1982-08-17 |
| 4313001 | Process for purifying aqueous acrylamide solutions | Hiroshi Itoh, Jun Saitoh, Takatoshi Mitsuishi | 1982-01-26 |
| 4302600 | Process for the purification of an aqueous acrylamide solution | Jun Saitoh, Kenzo Fujii, Toshimi Nakagawa, Takatoshi Mitsuishi, Hiroshi Itoh | 1981-11-24 |