US PATENT SUBCLASS 546 / 254
.~.~.~.~.~ Starting materials include an acyclic hydrocarbyl ether or an acyclic hydrocarbyl alcohol


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

Internet Version by PATENTEC © 1999      Terms of Use



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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {1}
1  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24}
250  DF  .~.~.~ Process of forming pyridine ring {1}
251  DF  .~.~.~.~ The pyridine ring is unsubstituted or hydrocarbyl substituted only {3}
254.~.~.~.~.~ Starting materials include an acyclic hydrocarbyl ether or an acyclic hydrocarbyl alcohol


DEFINITION

Classification: 546/254

Starting Materials Include an Acyclic Hydrocarbyl Ether or an Acyclic Hydrocarbyl Alcohol:

(under subclass 251) Processes which utilize an acyclic hydrocarbyl ether or an acyclic hydrocarbyl alcohol as a starting material.