US PATENT SUBCLASS 501 / 40
.~.~ Nonoxide glasses (e.g., fluoride glasses, etc.)

Current as of: June, 1999
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501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
11  DF  .~ Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions {11}
40.~.~ Nonoxide glasses (e.g., fluoride glasses, etc.)

DEFINITION

Classification: 501/40

Nonoxide glasses (e.g., fluoride glasses, etc.):

(under subclass 11) Compositions consisting solely of materials other than oxides.

(1) Note. The glass may comprise, e.g., binary or ternary halides, sulfides, or nitrides of germanium, selenium, or

tellurium.

SEE OR SEARCH CLASS

148, Metal Treatment,

304+, and 403 for so-called alloy glasses or glassy alloys which contain only metals in an amorphous solid state.