Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691254 | Enamel frit composition for a low-expansion crystallized glass and enamel-coated low-expansion crystallized glass plate using the same | Akihiko Sakamoto, Kiyoshi Katagi | 1997-11-25 |
| 5624761 | Fire-protection and safety composite glass panel | Akihiko Sakamoto, Tadashi Takahashi | 1997-04-29 |