Alumina core having a high degree of porosity and crushability characteristics
US4184885A · kind A · utility
24Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1979 |
| Grant date | Jan 22, 1980 |
| Priority date | — |
| Expiry date | Jan 25, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24997
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A fired alumina article having a core of material having from 20 to 65 percent continuous porosity by volume and desired crushability characteristics and an integral outer barrier layer consisting of porous alumina having a density gradient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.