US PATENT SUBCLASS 558 / 58
.~.~.~ Additional benzene ring containing

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

Internet Version by PATENTEC © 1999      Terms of Use


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
44  DF  .~ Sulfonate esters (i.e., compounds having the sulfonate group, -O-S(=O)(=O) , wherein the single bonded oxygen is bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {7}
56  DF  .~.~ Benzene ring bonded directly to the sulfonate group {2}
58.~.~.~ Additional benzene ring containing

DEFINITION

Classification: 558/58

(under subclass 56) Compounds which contain an additional benzene ring.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]