Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808316 | Process for treating waste water containing uranium and fluorine | Keiichiro Otomura, Yoshikazu Ogura, Yoshiaki Echigo, Mutsunori Yamao | 1989-02-28 |
| 4778695 | Production of microspheroidal particles of resole resins | Yoshiaki Echigo, Mutsunori Yamao, Yoshiyuki Suematu, Keiichi Asami, Ritsuko Shidei | 1988-10-18 |
| 4769180 | Process for separately recovering uranium and hydrofluoric acid from waste liquor containing uranium and fluorine | Yoshiaki Echigo, Hirotaka Amimoto, Mutsunori Yamao, Keiichiro Otomura, Sakae Fujisaki +1 more | 1988-09-06 |
| 4748214 | Microspherical cured phenolic resin particles and process for production thereof using emulsion stabilizers | Keiichi Asami, Yoshiaki Echigo, Mutsunori Yamao, Yoshiyuki Suematu, Ritsuko Shidei | 1988-05-31 |
| 4640971 | Microspherical particles of resole resins and process for producing the same | Yoshiaki Echigo, Mutsunori Yamao, Yoshiyuki Suematu, Keiichi Asami, Ritsuko Shidei | 1987-02-03 |
| 4576969 | Spherical ion exchange resin having matrix-bound metal hydroxide, method for producing the same and method for adsorption treatment using the same | Yoshiaki Echigo, Yoshiyuki Suematsu | 1986-03-18 |
| 4187358 | Resin composition | Kayomon Kyo, Yasuhiko Asai, Sadao Kato, Hiroshi Sugawara | 1980-02-05 |