CPC Subgroup
C03C 3/04 containing silica
Full Title
Glass compositions > containing silica
4 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C03C 3/06 with more than 90% silica by weight, e.g. quartz
- C03C 3/062 with less than 40% silica by weight
- C03C 3/076 with 40% to 90% silica, by weight