US PATENT SUBCLASS 208 / 121
.~.~.~ Metal or metal oxide containing catalyst

Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
106  DF  .~ Cracking {5}
113  DF  .~.~ Catalytic {4}
121.~.~.~ Metal or metal oxide containing catalyst {1}
122  DF  .~.~.~.~> Group III metal or oxide {2}

DEFINITION

Classification: 208/121

(under subclass 113) Processes wherein the catalyst contains a metal or metal oxide.

(1) Note. Metal salts of an amphoteric metal, e.g., metal chromates are classified herein as a mixture of metal oxides (chromium oxide with the other metal oxide).