Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5225247 | Process for producing a gas purging plug with increased resistance to infiltration and oriented porosity | Lorenz Dotsch, Helmut Preyer, Frich Renfordt | 1993-07-06 |
| 4884787 | Refractory, ceramic, shaped member | Dotsch Lorenz, Karl-Heinz Hofer, Bernd Kull | 1989-12-05 |