Zirconia porcelain
US4722915A · kind A · utility
10Cited by
0References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Nov 28, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a high durability zirconia porcelain which is high in thermal stability and free from degradation phenomena such as profile change and strength reduction, and is characterized in that change in length after the zirconia porcelain being maintained in hot water at 250.degree. C. for 50 hours is not more than 0.05%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.