Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6964807 | Water-metachromatic laminate, and process for its production | Hisayoshi Kato | 2005-11-15 |
| 6953345 | Water-metachromatic cloth sheet, toy set using the same, and writing instrument for water-metachromatic members | Takao Kani | 2005-10-11 |