US PATENT SUBCLASS 117 / 72
.~.~.~ Quartz (SiO2) product

Current as of: June, 1999
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117 /   HD   SINGLE-CRYSTAL, ORIENTED-CRYSTAL, AND EPITAXY GROWTH PROCESSES; NON-COATING APPARATUS THEREFOR

11  DF  PROCESSES OF GROWTH FROM LIQUID OR SUPERCRITICAL STATE {7}
68  DF  .~ Having growth from a solution comprising a solvent which is liquid at or below 20 degrees Celsius (e.g., aqueous solution) {3}
71  DF  .~.~ At pressure above 1 atmosphere (e.g., hydrothermal processes) {1}
72.~.~.~ Quartz (SiO2) product

DEFINITION

Classification: 117/72

Quartz (SiO2) product:

(under subclass 71) Subject matter in which single-crystal* silicon dioxide is grown.

(1) Note. Cross-referencing to art collection 943 is precluded as unnecessarily duplicative.