US PATENT SUBCLASS 423 / 174
.~.~.~ Forming calcium carbide


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

Internet Version by PATENTEC © 1999      Terms of Use



423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
155  DF  .~ Alkaline earth metal (Mg, Ca, Sr, or Ba) {11}
173  DF  .~.~ Treating impure carbonate (e.g., oyster shells, etc.) {2}
174.~.~.~ Forming calcium carbide


DEFINITION

Classification: 423/174

(under subclass 173) Processes including the step of chemically forming calcium carbide (CaC2[end subscrpt]).