US PATENT SUBCLASS 516 / 921
COLLOID SYSTEMS HAVING SPECIFIED HIGH PURITY (E.G., ULTRA-PURE SILICA)
Current as of:
June, 1999
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516 /
HD
COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF
921
COLLOID SYSTEMS HAVING SPECIFIED HIGH PURITY (E.G., ULTRA-PURE SILICA)
DEFINITION
Classification: 516/921
COLLOID SYSTEMS HAVING SPECIFIED HIGH PURITY (E.G.,
ULTRA-PURE SILICA):
(under the class definition) A collection of art which discloses colloid systems having specified high purity, such as, ultra-pure silica.
