ClassID:

85031

C01B33/185 - CPC Classification

Classification description:

Silicon; Compounds thereof; Silicon oxides; Hydrates thereof; Silica; Hydrates thereof, e.g. lepidoic silicic acid; Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process of crystalline silica-polymorphs having molecular sieve properties, e.g. silicalites

Recent Application in this class: