Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8399156 | Volume phase hologram recording material and optical information recording medium using the same | Kohei Tomari, Kazuyoshi Masaki, Takehiro Shimizu, Yasuji Shichijo | 2013-03-19 |
| 8298726 | Volume phase hologram recording material and optical information recording medium | Takehiro Shimizu, Kazuyoshi Masaki | 2012-10-30 |