Process for the production of glass
US4828593A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Oct 27, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for production of a glass by a vacuum melting method using silica as raw materials comprising heating silica powders in the presence of an accelerator for phase conversion to convert them into a sintered body having cristobalite phase; molding or repowdering the sintered body; containing or filling the resulted sintered body in a container having a desired shape; and then heating and melting it in vacuo for glass formation, or accumulating a plurality of the sintered bodies into a desired shape; and then heating and melting it for glass formation, whereby a high-quality glass ingot having a desired shape or a larger glass ingot can be readily obtained without reduction in productivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.