Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7311994 | Separator for lithium ion secondary battery and lithium ion secondary battery provided therewith | Masahide Sugiyama, Hiroki Totsuka, Masanori Takahata | 2007-12-25 |