US PATENT SUBCLASS 501 / 23
.~.~.~.~.~ And titanium or zirconium

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}
14  DF  .~.~ Enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients) {4}
21  DF  .~.~.~ Chemically specified frit compositions {4}
22  DF  .~.~.~.~ Lead containing {1}
23.~.~.~.~.~ And titanium or zirconium

DEFINITION

Classification: 501/23

And titanium or zirconium:

(under subclass 22) Compositions which additionally include titanium or zirconium or a compound of either of them.