Billman; Elizabeth R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Billman; Elizabeth R..The latest application filed is for "alumina-zirconia-silicon carbide-magnesia ceramic cutting tools".
- Billman; Elizabeth R. - Greensburg PA
- Billman; Elizabeth R. - Pittsburgh PA
| Patent | Date |
|---|---|
| Alumina-zirconia-silicon carbide-magnesia ceramic cutting tools Grant 5,024,976 - Mehrotra , et al. * June 18, 1 | 1991-06-18 |
| Alumina-zirconia-carbide whisker reinforced cutting tools Grant 4,959,332 - Mehrotra , et al. * September 25, 1 | 1990-09-25 |
| Alumina-zirconia-silicon carbide-magnesia cutting tools Grant 4,959,331 - Mehrotra , et al. * September 25, 1 | 1990-09-25 |
| Whisker reinforced ceramics and a method of clad/hot isostatic pressing same Grant 4,956,315 - Mehrotra , et al. * September 11, 1 | 1990-09-11 |
| Cutting tool Grant 4,852,999 - Mehrotra , et al. August 1, 1 | 1989-08-01 |
| Alumina coated silcon carbide whisker-alumina composition Grant 4,801,510 - Mehrotra , et al. January 31, 1 | 1989-01-31 |
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