Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870193 | Process for producing spiro-orthocarbonate | Hiromu Taguchi, Hiroyuki Kato, Takeshi Endo | 1989-09-26 |
| 4849529 | Method for production of spiro-orthocarbonate | Hitoshi Kato, Kuniko Ogasawara, Takeshi Endo | 1989-07-18 |