Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6025429 | Granulated acetylene black, process for its production and its application | Yoshiteru Yamazaki, Kazuyoshi Tsuruta | 2000-02-15 |
| 5973059 | Granulated acetylene black, process for its production and its application | Yoshiteru Yamazaki, Kazuyoshi Tsuruta | 1999-10-26 |