.~ Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions {11}
12
.~.~ Made by gel route
DEFINITION
Classification: 501/12
Made by gel route:
(under subclass 11) Compositions which have been prepared by a method other than melting including at least one step in which the glass forming ingredients are in a gel or sol state, and glass making processes involving such a step.
(1) Note. Documents classified as originals in this subclass are cross-referenced on the basis of the chemical nature of the glass composition disclosed into subclasses 40, 41+, and/or 53+, as appropriate.
(2) Note. Documents classified as originals in this subclass which disclose optical glass compositions are cross-referenced in subclasses 900+.
SEE OR SEARCH CLASS
65, Glass Manufacturing,
134+, for processes of homogenizing or purifying molten glass.
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
98+, for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.
