Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10658665 | Lithium ion secondary battery having a negative electrode active material formed of a graphite material and a conductive carbon material different from the graphite material | Hiroya Umeyama, Koji Torita, Akihiro Taniguchi, Tatsuya Hashimoto | 2020-05-19 |
| 10651460 | Nonaqueous electrolyte secondary battery | Hiroya Umeyama, Keiichi Takahashi, Tatsuya Hashimoto | 2020-05-12 |