| Application number | Title of the application | Filing Date | Status |
|---|
| 07/465206 | CERAMICS COMPOSITE MATERIAL AND METHOD OF PRODUCING THE SAME | Mar 1, 1990 | Abandoned |
| 07/486410 | ABRASIVE MATERIAL | Feb 27, 1990 | Abandoned |
| 07/484941 | PROCESS FOR PRODUCING DENSE-SINTERED CORDIERITE BODIES | Feb 25, 1990 | Abandoned |
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