Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6239053 | Large format fireclay refractory block and method of producing the same | Franz Gebhardt | 2001-05-29 |
| 6171990 | Large-format fireclay refractory brick, in particular bottom block for a tin bath | — | 2001-01-09 |
| 5941043 | Large-format fireclay refractory brick and method for its production | — | 1999-08-24 |
| 5827601 | Large-format fireclay refractory brick, in particular bottom block in a tin bath | — | 1998-10-27 |
| 5407875 | Superduty fireclay refractory brick and methods for its manufacture | — | 1995-04-18 |