Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6407296 | Process for producing difluoromethane | Yasufu Yamada, Takashi Shibanuma | 2002-06-18 |
| 6375808 | Process for producing difluoromethane | Takashi Shibanuma, Yasufu Yamada | 2002-04-23 |
| 6346172 | Process for producing difluoromethane | Takashi Shibanuma | 2002-02-12 |