Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6333371 | Coating composition for coloring a glass, process for the production thereof and use thereof | Toshiyuki Hashimoto, Naohisa Hirata, Hisao Tanaka | 2001-12-25 |
| 5856398 | Aqueous pigment dispersion for light-shielding paper | Kosaku Tsuji, Hisao Tanaka, Tsutomu Fujigamori | 1999-01-05 |