Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6103111 | Tourmaline composite grains and apparatus using them | Hikohiro Sano, Minoru Tanaka | 2000-08-15 |
| 6034013 | Tourmaline composite grains and apparatus using them | Hikohiro Sano | 2000-03-07 |
| 5830551 | Method for manufacturing a patterned tile | Shinichi Kakamu, Shukichi Kakamu | 1998-11-03 |
| 5685931 | Method of manufacturing an accessory tile | Shinichi Kakamu, Shukichi Kakamu | 1997-11-11 |
| 5670228 | Tile having a pattern and its manufacturing method | Shinichi Kakamu, Shukichi Kakamu | 1997-09-23 |