Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6777076 | Graphite-coated shaped body made of sintered silicon carbide | Karl-Alexander Schwetz, Armin Kayser | 2004-08-17 |
| 5939185 | Bearing material of silicon carbide | Jochen Greim, Michael Fundus | 1999-08-17 |
| 5543370 | Composite materials based on boron carbide, titanium diboride and elemental carbon and processes for the preparation of same | Lorenz Sigl, Karl-Alexander Schwetz | 1996-08-06 |
| 5505899 | Process for producing bodies based on boron carbide by pressureless sintering | Lorenz Sigl, Karl-Alexander Schwetz | 1996-04-09 |
| 4970036 | Process for producing green compacts by molding sinterable ceramic mixtures based on silicon nitride | Dietrich Lange, Karl-Alexander Schwetz | 1990-11-13 |
| 4743571 | Polycrystalline sintered bodies on a base of silicon nitride with high fracture toughness and hardness | Detlef Steinmann, Alfred Lipp, Dietrich Lange | 1988-05-10 |