Chemically reinforced glass manufacture method, information recording medium glass substrate manufacture method, information recording medium manufacture method, and chemical reinforcement device
US6534120B1 · kind B1 · utility
16Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2000 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jun 29, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C21/002
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to prevent particles generated in the preparation of a chemically reinforcing molten salt from getting into an operation atmosphere for performing a chemical reinforcement, a chemical reinforcement tank 2 and a dissolution tank 10 for preparing the chemically reinforcing molten salt are separated from each other. In a typical embodiment, the chemical reinforcement tank is disposed in a clean room 35, and the dissolution tank 10 is disposed outside the clean room.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.