US PATENT SUBCLASS 502 / 105
.~.~.~.~ Including comminuting (e.g., milling, grinding, etc.)

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

100  DF  CATALYST OR PRECURSOR THEREFOR {12}
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}
103  DF  .~.~ Component A metal is Group IA, IIA or IIIA and component B metal is Group IVB to VIIB or VIII (i.e., alkali metal, alkaline earth Metal, Be, Mg, Al, Ga, In or Tl and Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, iron Group or Platinum group) (e.g., Ziegler Catalyst, etc.) {6}
104  DF  .~.~.~ Preparing catalyst or precursor {7}
105.~.~.~.~ Including comminuting (e.g., milling, grinding, etc.)

DEFINITION

Classification: 502/105

Including comminuting (e.g., milling, grinding, etc.):

(under subclass 104) Process which includes a step of mechanically breaking up a solid ingredient of the catalyst.

(1) Note. This process generally employs such apparatus as rod or ball mills, etc.