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| Number | Title | Issue Date |
| 5306565 | High temperature ceramic composite A composite ceramic structure which does not fail catastrophically and thus is useful as a ceramic rolling contact bearing assembly is disclosed. The structure is a ceramic monolith bonded through an interlayer to a fiber-reinforced ceramic body. The stru... | 04/26/1994 |
| 5167943 | Titanium nitride coated silicon carbide materials with an interlayer resistant to carbon-diffusivity Finely divided silicon carbide materials, particularly powders, whiskers and short fibers, are provided with a titanium nitride surface coating by the process of (i) placing a low carbon diffusivity layer atop the silicon carbon, (ii) placing a titanium m... | 12/01/1992 |
| 5132984 | Segmented electric furnace An electric furnace comprising a container having electrically isolated wall segments useful for melting materials, particlularly ceramics, is disclosed. The electric fornace's side walls are constructed from electrically isolated segments, which cause el... | 07/21/1992 |
| 5098740 | Uniformly-coated ceramic particles Solids that are subject to a deleterious reaction with a dispersion medium in which they are suspended can be safely comminuted in that dispersion medium by providing therein a surfactant capable of reacting with the solid at a faster rate than the disper... | 03/24/1992 |
| 5096864 | Process of spray drying sialon A process for improving the strength of a sialon powder formed by a spray drying process is disclosed. The process involves the addition of small amounts of a hydrophilic silane to the slurry of inorganic powders and water which is fed to the spray dryer.... | 03/17/1992 |
| 5076991 | Method and apparatus for rapid solidification A novel process for rapid solidification of ceramic melts combines certain features of cooling by atomization and by contact with chilling surfaces. The material to be solidified is divided into fine liquid droplets that are propelled by a rapid flow of g... | 12/31/1991 |
| 5061416 | Process for the manufacture of friable silicon nitride bodies A friable silicon nitride body is prepared by infiltrating a non-friable silicon nitride body with a fluid which expands upon freezing, rapidly freezing the fluid, and thawing the frozen fluid. Silicon nitride flakes and chunks obtained with only light pr... | 10/29/1991 |
| 4970057 | Silicon nitride vacuum furnace process An improved process of preparing silicon nitride by the direct nitridation of silicon metal is disclosed. The process is a multi-step one which is substantially more efficient than prior processes and produces a silicon nitride having an oxygen content of... | 11/13/1990 |
