Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814441 | Apparatus for measurement of polarized distribution, polarizing filter for using therein and polarizing filter assembly | Kazuhiko Ohnuma, Yasufumi Fukuma | 2004-11-09 |
| 6726326 | Observation apparatus | Yasufumi Fukuma | 2004-04-27 |