Manufacture of glass-ceramic plates having opening(s) of bent perimeter, bent glass-ceramic plates
US6182472A · kind A · utility
29Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Apr 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/74
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to: a method of bending the perimeter of at least one opening (2) provided in a glass-ceramic precursor plate (1), said perimeter describing a closed curve without sharp angles; a method of manufacturing a glass-ceramic plate (10', 10") in which at least one opening (2) is provided, whose perimeter describing a closed curve without sharp angles is bent; novel glass-ceramic plates (10', 10"), obtainable by implementing said manufacturing methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.