Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6512147 | Apparatus and process for generating mixed multi-component vapor | Kazunori Fujita, Hiroshi Kofuji | 2003-01-28 |
| 6348626 | Process for producing oxamide | Tomohiko Yamamoto, Genji Koga, Hideki Noguchi, Joji Funatsu | 2002-02-19 |
| 6336997 | Process for refining heat-deteriorative compound, contained in multi-component liquid mixture, by distillation | Kazunori Fujita, Hiroshi Kofuji | 2002-01-08 |
| 6262315 | Process and apparatus for producing dihydric phenolic compound | Kazunori Fujita, Hiroshi Kofuji | 2001-07-17 |
| 6087466 | Polyurethane and polyester polyol | Shigeru Murata, Masahiko Yasuda, Tetsuya Nakajima | 2000-07-11 |
| 5670028 | Process for preparing high purity hydrogen peroxide aqueous solution | Yohsuke Ueno, Masahiko Watanabe, Yukihiro Nishida | 1997-09-23 |
| 5624655 | Process for purifying hydrogen peroxide aqueous solution | Yohsuke Ueno, Takayuki Tsujino, Tohru Murakami | 1997-04-29 |
| 5393319 | Process for producing oxamide granules | Tomohiko Yamamoto, Genji Koga, Hideki Noguchi, Joji Funatsu | 1995-02-28 |
| 5250707 | Process for preparing .epsilon.-caprolactone | Yohsuke Ueno, Takafumi Hirakawa, Suzuo Takiguchi | 1993-10-05 |
| 5245029 | Ion exchange purification method of aqueous caprolactam solution | Yasuhiro Kurokawa, Takafumi Hirakawa, Kanji Oyama | 1993-09-14 |
| 5238636 | Processes for producing porous polymer films and composite films | Takeo Furukawa | 1993-08-24 |
| 5206425 | Process for preparing perpropionic acid solution | Takafumi Hirakawa, Yohsuke Ueno, Suzuo Takiguchi | 1993-04-27 |
| 5098607 | Process for stabilizing percarboxylic acid | Takafumi Hirakawa, Hiromi Yabuta, Hiroyuki Iida | 1992-03-24 |
| 4540800 | Preparation of 2,3-dihydro-2-methyl-2,3-dialkyl-7-oxybenzofurans | Taisei Igarashi, Susumu Tahara, Takashi Miyatake | 1985-09-10 |