US PATENT SUBCLASS 502 / 232
.~ Silicon containing or process of making

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

100  DF  CATALYST OR PRECURSOR THEREFOR {12}
232.~ Silicon containing or process of making {2}
233  DF  .~.~> Forming silica gel {2}
240  DF  .~.~> With metal, metal oxide, or metal hydroxide {8}

DEFINITION

Classification: 502/232

Silicon containing or processing of making:

(under subclass 100) Composition containing element number 14 free or chemically combined.

(1) Note. Metal silicates are classified as a mixture of silicon dioxide and a metal oxide. Illustration: a composition with magnesium silicate is classified as SiO2 and MgO and will be found in subclass 251.

SEE OR SEARCH THIS CLASS, SUBCLASS:

60+, for a composition including a clay of zeolite.