US PATENT SUBCLASS 424 / 494
.~.~.~.~ Cellulose derivatives


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

Internet Version by PATENTEC © 1999      Terms of Use



424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

400  DF  PREPARATIONS CHARACTERIZED BY SPECIAL PHYSICAL FORM {12}
489  DF  .~ Particulate form (e.g., powders, granules, beads, microcapsules, and pellets) {5}
490  DF  .~.~ Coated (e.g., microcapsules) {5}
493  DF  .~.~.~ Containing polysaccharides (e.g., sugars) {1}
494.~.~.~.~ Cellulose derivatives {1}
495  DF  .~.~.~.~.~> Ethyl cellulose


DEFINITION

Classification: 424/494

Cellulose derivatives:

(under subclass 493) Subject matter in which the polysaccharide is cellulose or a derivative thereof.