Method for field-assisted ion exchange with anodic and cathodic contacting
US4836899A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Aug 4, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C21/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An arrangement for mounting a glass member for a field-assisted ion exchange utilizing anodic and cathodic contacting by molten salts characterized by the glass member being arranged between two salt melt vessels containing the salts, each of the vessels having a contact opening surrounded by a sealing lip or surface for engaging a surface of the member as the member is interposed between the two openings and each of the vessels having an arrangement for evacuation of the vessels to form a seal between the sealing lip and the surface of the member. An embodiment of the invention includes a device for changing the level of the molten salts, either by dipping electrodes therein or by rotating the vessels so that the contact openings may be submerged in the molten salt or be above the liquid salt to allow a removing and changing of the glass members being processed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.