Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5747631 | Precursor of amorphous carbon molded article | Shingo Sasaki | 1998-05-05 |
| 4839445 | Spherical particles of thermosetting phenolic resin and process for producing the same | Yoshiaki Echigo, Kenichi Sugawara, Yoshiyuki Suematu, Keiichi Asami, Tuneyuki Ohsawa | 1989-06-13 |
| 4808316 | Process for treating waste water containing uranium and fluorine | Keiichiro Otomura, Yoshikazu Ogura, Yoshiaki Echigo, Tadashi Ishikura | 1989-02-28 |
| 4778695 | Production of microspheroidal particles of resole resins | Yoshiaki Echigo, Yoshiyuki Suematu, Tadashi Ishikura, 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, Tadashi Ishikura, 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, Yoshiyuki Suematu, Tadashi Ishikura, Ritsuko Shidei | 1988-05-31 |
| 4640971 | Microspherical particles of resole resins and process for producing the same | Yoshiaki Echigo, Yoshiyuki Suematu, Tadashi Ishikura, Keiichi Asami, Ritsuko Shidei | 1987-02-03 |