Method of molding glass elements and element made
US4139677A · kind A · utility
44Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1977 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Jan 26, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of molding glass elements requiring no further preparatory operations such as grinding or polishing before use wherein a portion of glass is heat-softened and subjected to pressure in a mold having molding surfaces formed of silicon carbide (SiC) or silicon nitride (Si.sub.3 N.sub.4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.