US PATENT SUBCLASS 502 / 100
CATALYST OR PRECURSOR THEREFOR

Current as of: June, 1999
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502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

100CATALYST OR PRECURSOR THEREFOR {12}
101  DF  .~> Making catalytic electrode, process only
102  DF  .~> Plural component system comprising A - Group I to IV metal hydride or organometallic compound - and B - Group IV to VIII metal, lanthanide or actinde compound - (i.e., alkali metal, Ag, Au, Cu, alkaline earth metal, Be, Mg, Zn, Cd, Hg, Sc, Y, Al, Ga, In, Tl, Ti, Zn, Hf, Ge, Sn or Pb hydride or organometallic compound and Ti, Zr, Hf, Ge, Sn, Pb, V, Nb, Ta, As, Sb, Bi, Cr, Mo, W, Po, Mn, Tc, Re, Iron group, Platinum group, atomic number 57 to 71 inclusive or atomic number 89 or higher compound) {1}
150  DF  .~> Organic compound containing {13}
174  DF  .~> Inorganic carbon containing {4}
200  DF  .~> Nitrogen compound containing {1}
202  DF  .~> Boron or compound containing same {3}
208  DF  .~> Phosphorus or compound containing same {4}
215  DF  .~> Selenium or tellurium or compound containing same
216  DF  .~> Sulfur or compound containing same {3}
224  DF  .~> Halogen or compound containing same {6}
232  DF  .~> Silicon containing or process of making {2}
300  DF  .~> Metal, metal oxide or metal hydroxide {10}

DEFINITION

Classification: 502/100

CATALYST OR PRECURSOR THEREFOR:

(under the class definition) Composition which is a catalyst* or which is claimed or disclosed to be useful solely as an essential component of a catalyst composition or method of making such a composition. (* See glossary for definition.)

(1) Note. A precursor is classified with the complete disclosed catalyst composition. If a composition is disclosed or claimed as both a catalyst, per se, and as a precursor for another catalyst, it is classified in the first appearing subclass providing for any complete catalyst composition. In this regard, a composition comprising a Group VIII metal compound claimed or disclosed for use solely as a Ziegler catalyst is classifiable in subclass 103, rather than in subclass 100.

(2) Note. Included hereunder as catalysts are compositions employed to modify the course of a reaction so as to yield a different product than that which would be otherwise obtained, even though the modifying composition will not, per se, cause the reaction to take place. (c.f. pat. no. 4,125,481 to a molecular weight regulating mixture of mercaptan and emulsifier).

(3) Note. This and indented subclasses include inventions directed to negative catalysts, and also known as inhibitors, except preservatives (e.g., octane improvers of antioxidants etc.).

SEE OR SEARCH THIS CLASS, SUBCLASS:

520, for a collection of art directed to controlling

production of various possible products.

SEE OR SEARCH CLASS 106, Composition: Coating or Plastic,

1.11, for a sensitizing composition for activating a substrate to be subsequently electrolessly metal plated and which may have a catalytic function.

252, Compositions, for a composition intended to preserve a material, e.g., an anti-oxidant or for an octane improver composition which controls the rate of combustion in an internal combustion engine.

423, Chemistry of Inorganic Compounds, appropriate subclasses for inorganic compounds, per se, which may be useful as catalysts.