US PATENT SUBCLASS 505 / 735
.~.~ By sol-gel process

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


505 /   HD   SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS

725  DF  PROCESS OF MAKING OR TREATING HIGH Tc (ABOVE 30 K) SUPERCONDUCTING SHAPED MATERIAL, ARTICLE, OR DEVICE {11}
734  DF  .~ From organometallic precursors (e.g., acetylacetonates) {1}
735.~.~ By sol-gel process

DEFINITION

Classification: 505/735

By sol-gel process:

(under subclass 734) Process in which a colloidal dispersion (i.e., sol) is produced and a subsequent operation produces a gel from which superconducting material is formed. The gellation stage usually involves a controlled hydrolysis and polycondensation of alkoxide precursors.

SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations

Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

31+, for colloid systems of colloid-sized solid or semisolid phase dispersed in primarily organic continuous liquid phase (dispersions, suspensions, sols), subclasses 77+ for colloid systems of colloid-sized solid phase dispersed in aqueous continuous liquid phase (dispersions, suspensions, sols) subclasses 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; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.