Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5997775 | Electrically conductive barium sulfate-containing composition and process of producing | Takao Hayashi, Norihiro Sato, Manabu Hosoi, Nobuyoshi Kasahara, Wolf-Dieter Griebler +3 more | 1999-12-07 |
| 5131952 | Electrically conductive zinc sulfide powder and process of producing the same and use thereof | Takao Hayashi, Norihiro Sato, Manabu Hosoi, Nobuyoshi Kasahara, Wolf-Dieter Griebler +3 more | 1992-07-21 |
| 4894093 | Process for producing barium sulfate with reactive surface | Hans-Joachim Rohrborn | 1990-01-16 |