Porous inorganic materials
US4937209A · kind A · utility
12Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Sep 23, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/68
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is provided a porous cellular material comprising a plurality of cavities each defined by a substantially spherical wall formed of a rigid intermeshing matrix of ceramic needles said wall being pierced by at least one aperture to provide access to the cavity, and the or each aperture having a diameter such that the ratio of the diameter of the aperture to the diameter of the cavity into which the aperture opens is in the range of from 0.1:1 to 1:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.