Issued Patents 1997
Showing 1–1 of 1 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, Masayuki Ninomiya | 1997-11-25 |