Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6740153 | Bipyrrolinonylidene-type compound, colorant therewith, and method of production thereof | — | 2004-05-25 |
| 6691575 | Material evaluation method by acoustic velocity measurement | Jun-ichi Kushibiki, Izumi Watanabe | 2004-02-17 |