Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7217836 | Process for producing (meth)acrolein and/or (meth)acrylic acid | Seigo Watanabe, Toshihiro Sato | 2007-05-15 |
| 7098281 | Plastic optical fiber, optical fiber cable, optical fiber cable with plug, method for producing methyl methacrylate based polymer and method for producing plastic optical fiber | Hirotoshi Mizota, Tomonari Murakami, Yoshihiro Uozu, Shigeaki Sasaki, Koji Ishizaka +5 more | 2006-08-29 |
| 6969774 | Method for producing methacrylic acid | Seigo Watanabe | 2005-11-29 |
| 6930201 | Process for producing methacrylic acid | Seigo Watanabe | 2005-08-16 |
| 6777083 | Plastic optical fiber, optical fiber cable, optical fiber cable with plug, method for producing methyl methacrylate based polymer and method for producing plastic optical fiber | Hirotoshi Mizota, Tomonari Murakami, Yoshihiro Uozu, Shigeaki Sasaki, Koji Ishizaka +5 more | 2004-08-17 |
| 6710204 | Decreasing method of N-oxyl compound | Masanori Tokuda, Yasukazu Yoshida, Junichi Doi | 2004-03-23 |
| 6348619 | Process for producing a carboxylic acid ester by reacting an aldehyde and an alcohol using a palladium type catalyst | Yasukazu Yoshida, Yuji Mikami | 2002-02-19 |
| 6346646 | Process for producing methacrolein and methacrylic acid | Seigo Watanabe | 2002-02-12 |
| 5892102 | Catalyst used in production of carboxylic acid esters and process for producing these esters | Yuji Mikami, Akio Takeda | 1999-04-06 |
| 5892108 | Method for packing with catalyst for synthesis of unsaturated aldehyde and unsaturated carboxylic acid | Tohru Shiotani, Miezi Sugiyama, Toru Kuroda | 1999-04-06 |
| 5550095 | Process for producing catalyst used for synthesis of methacrylic acid | Hiroyuki Naito, Masato Otani, Toru Kuroda | 1996-08-27 |
| 5532199 | Carrier-supported catalyst for the synthesis of unsaturated aldehydes and unsaturated carboxylic acids and process for preparing the same | Seigo Watanabe | 1996-07-02 |
| 5420091 | Method of preparing catalyst used for producing methacrylic acids | Toru Kuroda | 1995-05-30 |
| 5349092 | Process for producing catalysts for synthesis of unsaturated aldehydes and unsaturated carboxylic acids | Seigo Watanabe | 1994-09-20 |
| 5250485 | Process for preparing catalysts used for production of methacrolein and methacrylic acid | Toru Kuroda | 1993-10-05 |
| 5208371 | Process for production of methacrolein and methacrylic acid | Tooru Kuroda, Masaaki Kato | 1993-05-04 |
| 5166119 | Preparation of catalysts for producing methacrolein and methacrylic acid | Yoshiyuki Taniguchi | 1992-11-24 |
| 5126307 | Process for preparing catalyst for producing methacrylic acid and catalyst prepared by process | Shinji Yamamoto | 1992-06-30 |
| 5104844 | Process of preparing catalysts for producing methacrylic acid | Shinji Yamamoto, Yutaka Kinoshita | 1992-04-14 |
| 5102846 | Process for preparing catalysts for producing methacrylic acid | Toru Kuroda, Kazuhiro Ishii | 1992-04-07 |
| 5102847 | Process for preparing catalysts for producing methacrylic acid | Shinji Yamamoto, Yutaka Kinoshita, Masako Usui | 1992-04-07 |
| 5093521 | Process for producing methacrylic acid | Toru Kuroda, Yutaka Kinoshita, Kazuhiro Ishii | 1992-03-03 |
| 4968838 | Process for the preparation of unsaturated carboxylic acids | Kazuhiro Ishii, Masaake Kato | 1990-11-06 |
| 4891347 | Process for the preparation of catalyst used in the production of unsaturated carboxylic acids | Kazuhiro Ishii, Masaaki Kato, Masao Kobayashi | 1990-01-02 |
| 4816603 | Process for the production of methacrolein and methacrylic acid | Yoshiyuki Taniguchi, Masaaki Kato, Masao Kobayashi | 1989-03-28 |