US PATENT SUBCLASS 252 / 519.1
.~.~ Compound viewed as composition (i.e., wherein atoms or molecules in a chemical formula are not present as whole small integer values or cannot be multiplied by a single-digit factor to yield integer values)

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

500  DF  ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS {6}
518.1  DF  .~ Metal compound containing {16}
519.1.~.~ Compound viewed as composition (i.e., wherein atoms or molecules in a chemical formula are not present as whole small integer values or cannot be multiplied by a single-digit factor to yield integer values) {4}
519.12  DF  .~.~.~> Titanium containing
519.13  DF  .~.~.~> Bismuth, ruthenium, or iridium containing
519.14  DF  .~.~.~> Sulfur, tellurium, selenium, nitrogen, phosphorus, or boron containing
519.15  DF  .~.~.~> Four diverse metals containing

DEFINITION

Classification: 252/519.1

Compound viewed as composition (i.e., wherein atoms or molecules in a chemical formula are not present as whole small integer values or cannot be multiplied by a single-digit factor to yield integer values):

(under subclass 518.1) Compositions which contain a compound wherein atoms or molecules in a chemical formula are not present as whole small integer values or cannot be multiplied by a factor in the single digit to yield integer values. Such a compound is considered a composition for purposes of this subclass and its indents.

(1) Note. The electrically conductive compounds provided for herein are regarded as compositions according to the Class 423 class definition (i.e., see Note (13) of Class 423). A mixture of such a compound proper for this subclass with a separate and distinct component is also proper for this subclass.

(2) Note. Class 505 is superior to Class 423 or Class 252.

SEE OR SEARCH CLASS

423, Chemistry of Inorganic Compounds, for an inorganic

compound wherein plural elements are present in specifically defined whole integer values.

505, Superconductor Technology: Apparatus, Material, Process, for electrically conducting superconducting compounds or compositions operative above 30 K.