.~ Synthetic precious stones (e.g., single crystals, etc.)
DEFINITION
Classification: 501/86
Synthetic precious stones (e.g., single crystals, etc.):
(under subclass 1) Compositions which are artificial precious stones, which are usually formed by the solidification of a melted composition containing ingredients giving the desired appearance, and processes for preparing such products except those forming single-crystals.
SEE OR SEARCH CLASS
23, Chemistry: Physical Processes,
295+, for physical processes of crystallizing inorganic chemical compounds or non-metal elements and where a single-crystal is not intended. The products, per se, are generally classified as chemical compounds. The process of de-twinning is classified in Class 117. Methods preventing decomposition of crystals by enclosing the crystals in an environment rich in the decomposition product (e.g., ammonium salt surrounded by ammonia gas) are classified with the crystal product.
63, Jewelry,
32, for jewelry in which the invention lies in the gem.
117, Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor, for processes and non-coating apparatus for growing therein-defined single-crystal of all types of materials, including inorganic or organic. 252, Compositions,
301.17, for laser compositions.
423, Chemistry of Inorganic Compounds,
446, for synthetic diamonds and their manufacture.
