US PATENT SUBCLASS 264 / 1.22
.~.~ Scandium (Sc), yttrium (Y), or rare earth containing (i.e., atomic numbers 21, 39, or 57-72)

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

1.1  DF  OPTICAL ARTICLE SHAPING OR TREATING {11}
1.21  DF  .~ Nonresinous material only (e.g., ceramic, etc.) {2}
1.22.~.~ Scandium (Sc), yttrium (Y), or rare earth containing (i.e., atomic numbers 21, 39, or 57-72)

DEFINITION

Classification: 264/1.22

Scandium (Sc), yttrium (Y), or rare earth containing (i.e., atomic numbers 21, 39, or 57-72):

(under subclass 1.21) Processes wherein the nonresinous material contains scandium, yttrium, or a rare earth.

(1) Note. The rare earths are: Lanthanum (La); Cerium (Ce); Praseodymium (Pr); Neodymium (Nd); Promethium (Pm); Samarium (Sm); Europium (Eu); Gadolinium (Gd); Terbium (Tb); Dysprosium (Dy); Holmium (Ho); Erbium (Er); Thulium (Tm); Ytterbium (Yb); Lutetium (Lu).