Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6444771 | Acrylic acid-maleic acid copolymer (or its salt), its production process and use, and production process for aqueous maleic salt solution with low impurity content | Shigeru Yamaguchi, Tamao Ishida | 2002-09-03 |
| 6441978 | Optical prism for projecting image | Hiroyoshi Kobayashi, Kazuya Yamanaka | 2002-08-27 |
| 6400341 | Head-mounted picture display device | Motohiro Atsumi | 2002-06-04 |
| 6351252 | Head-mounted picture display device | Motohiro Atsumi | 2002-02-26 |
| 6335711 | Head-mounted picture display device | Motohiro Atsumi, Kunio Yamamiya | 2002-01-01 |