Production of glass microspheres
US4778502A · kind A · utility
50Cited by
8References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Mar 2, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Processes and apparatus for the production of hollow microspheres by thermal expansion of glass particles including the thermal treatment of extremely small glass particles whose dimensions are less than 50 micrometers and, preferably, less than 35 micrometers or even 20 micrometers, which include a fluidizing agent. This technique makes possible the production of extremely small glass microspheres under satisfactory yield conditions. Also, the hollow microsphere products produced by these processes and apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.