US PATENT SUBCLASS 435 / 48
.~.~ Di-substituted in 7-position

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

Internet Version by PATENTEC © 1999      Terms of Use


435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

41  DF  MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26}
47  DF  .~ Preparing compound having a 1-thia-5-aza-bicyclo (4.2.0) octane ring system (e.g., cephalosporin, etc.) {4}
48.~.~ Di-substituted in 7-position

DEFINITION

Classification: 435/48

Di-substituted in 7-position:

(under subclass 47) Processes wherein the polycyclic ring system synthesized contains two substituents other than hydrogen in the 7-position.