US PATENT SUBCLASS 430 / 491
.~.~.~ Sequestrant

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

Internet Version by PATENTEC © 1999      Terms of Use


430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

449  DF  NONRADIATION SENSITIVE IMAGE PROCESSING COMPOSITIONS OR PROCESS OF MAKING {7}
464  DF  .~ Developer {10}
486  DF  .~.~ Processing additive containing {7}
491.~.~.~ Sequestrant

DEFINITION

Classification: 430/491

Sequestrant:

(under subclass 486) Compositions wherein the additive reacts with metal ions to provide a stable, soluble complex, thereby preventing the metal ions from taking part in undesirable reactions.