US PATENT SUBCLASS 552 / 108
.~.~ One of the rings is part of a polycyclo ring system (e.g., naphthyldiphenylcarbinol, etc.)

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

Internet Version by PATENTEC © 1999      Terms of Use


552 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, subclass 1) {11}
101  DF  .~ Acyclic carbon bonded directly to three benzene rings or to two benzene rings and a cyclohexadienyl ring, which acyclic carbon may not be bonded to a fourth carbon (e.g., triphenylmethane dyestuffs, etc.) {12}
108.~.~ One of the rings is part of a polycyclo ring system (e.g., naphthyldiphenylcarbinol, etc.)

DEFINITION

Classification: 552/108

(under subclass 101) Compounds wherein a polycyclo ring system is bonded directly to the acyclic carbon.

(1) Note. An example of a compound provided for herein is: [figure]