US PATENT SUBCLASS 208 / 291
.~.~ Oxygen containing

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

Internet Version by PATENTEC © 1999      Terms of Use


208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

177  DF  REFINING {23}
290  DF  .~ With organic compound {1}
291.~.~ Oxygen containing

DEFINITION

Classification: 208/291

(under subclass 290) Processes wherein an organic compound containing oxygen is employed.