US PATENT SUBCLASS 106 / 31.19
.~.~.~.~.~.~.~ With specified color former

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
31.01  DF  .~ Marking {14}
31.13  DF  .~.~ Inks {6}
31.14  DF  .~.~.~ Invisible {4}
31.16  DF  .~.~.~.~ Chromogenic (i.e., color formation by reaction of color former with color developer) {2}
31.17  DF  .~.~.~.~.~ Specified developer (i.e., electron acceptor) {1}
31.18  DF  .~.~.~.~.~.~ Phenolic hydroxy compound as the developer {1}
31.19.~.~.~.~.~.~.~ With specified color former

DEFINITION

Classification: 106/31.19

With specified color former:

(under subclass 31.18) Compositions where the color former (electron donator, proton accepting component) is identified.

(1) Note. An example of a color former is malachite green lactone.