Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661915 | Illumination variable colorimetric method and colorimeter | Takao Sumiyoshi, Hideaki Kodachi | 2003-12-09 |
| 6591701 | Weathering test apparatus having a long-arc type air-cooled vertical metal halide lamp | — | 2003-07-15 |