US PATENT SUBCLASS 208 / 404
.~ Using molten additive, e.g., heat carrier, etc.


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

400  DF  BY TREATMENT OF SOLID MINERAL, E.G., COAL LIQUEFACTION, ETC. {13}
404.~ Using molten additive, e.g., heat carrier, etc. {1}
405  DF  .~.~> Molten catalyst {1}


DEFINITION

Classification: 208/404

Using molten additive, e.g., heat carrier, etc.:

(under subclass 400) Subject matter having a step wherein a heated liquid material is added to a feedstock, an intermediate or a product of the process, which material is a solid at normal temperature and pressure.