US PATENT SUBCLASS 568 / 617
.~.~.~.~.~ Polytetramethylene glycols

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

Internet Version by PATENTEC © 1999      Terms of Use


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
579  DF  .~.~ Ethers {11}
606  DF  .~.~.~ Plural oxyalkylene groups bonded directly to each other {3}
613  DF  .~.~.~.~ Acyclic {6}
617.~.~.~.~.~ Polytetramethylene glycols

DEFINITION

Classification: 568/617

Polytetramethylene glycols:

(under subclass 613) Compounds which contain two or more oxytetramethylene moieties terminated by hydroxy groups.

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