Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9139710 | Aliphatic polyester resin compositions, molded articles of aliphatic polyester resin and method of producing same | Mamoru Yasui, Tatsuhiko Osaki, Takeshi Kanamori, Hisashi Okuyama | 2015-09-22 |
| 6432600 | Toner for electrophotography | Yoshihito Suwa, Hisashi Okuyama | 2002-08-13 |
| 6313319 | Method for purifying lactide and lactide for food additives | Hitomi Ohara, Hisashi Okuyama, Makoto Ogaito, Yasuhiro Fujii, Tatsushi Kawamoto +1 more | 2001-11-06 |
| 6060622 | Methods of reproducing lactic acid components by using lactic acid based by-products | Hisashi Okuyama, Makoto Ogaito, Tatsushi Kawamoto, Takashi Kawabe | 2000-05-09 |