Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5720919 | Al.sub.2 O.sub.3 and Y.sub.2 O.sub.3 containing silicon nitride having high mechanical strength at high temperatures | Hartmut Kruner, Gunter Riedel, Rainer Hamminger | 1998-02-24 |
| 5656219 | Process for producing densely sintered silicon nitride components | Gunter Riedel, Hartmut Kruner, Friedrich Hessel, Wolfgang Bocker, Jurgen Heinrich +3 more | 1997-08-12 |
| 5556815 | High temperature resistant silicon nitride ceramic | Hartmut Kruner, Gunter Riedel, Rainer Hamminger | 1996-09-17 |
| 5059565 | Silicon nitride ceramic and a process for its preparation | Marcellus Peuckert | 1991-10-22 |