| Application number | Title of the application | Filing Date | Status |
|---|
| 07/695232 | PROCESS FOR PREPARING POLYCRYSTALLINE CBN CERAMIC MASSES AND RESULTING PRODUCT | May 1, 1991 | Abandoned |
| 07/690656 | OPTICAL MOLDINGS MADE FROM SILICON NITRIDE, AND A PROCESS FOR THEIR PRODUCTION | Apr 23, 1991 | Abandoned |
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| 90/002309 | GRINDING WHEEL WITH COMBINATION OF FUSED AND SINTERED ABRASIVE GRITS | Mar 27, 1991 | Issued |
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| 07/657299 | COATING FOR FORMING AN OXIDE COATING | Feb 18, 1991 | Abandoned |
Array
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