Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688872 | Bisaminothiophenol compound, process for producing the same and curing agent for fluorine-containing elastomer comprising the same | Takehiro Sonoi, Haruyoshi Tatsu, Lev Solomonovich German, deceased | 1997-11-18 |
| 5672758 | Bisaminothiophenol compound, process for producing the same and curing agent for fluorine-containing elastomer comprising the same | Takehiro Sonoi, Haruyoshi Tatsu, Lev Solomonovich German, deceased | 1997-09-30 |