C
SECTION C — CHEMISTRY AND METALLURGY
  
CHEMISTRY
 C04
CEMENTS; CERAMICS, etc.; SOUND OR THERMAL INSULATING MATERIALS
 C04

Note(s)

This class does not include mechanical features provided for elsewhere, g. mechanical working B28, mechanical aspects of coating, e.g. applying glazes by brushing, dipping, spraying, B44, kilns F27.

 C04B
LIME; CEMENTS; CERAMICS (glass ceramics C03C 3/22); STONE OR THE LIKE; SOUND OR THERMAL INSULATING MATERIALS