Education and demonstration – Question or problem eliciting response – Grading of response form
Reexamination Certificate
2005-04-12
2005-04-12
Harris, Chanda L. (Department: 3714)
Education and demonstration
Question or problem eliciting response
Grading of response form
C434S327000, C434S328000, C434S346000, C434S348000, C434S354000, C434S355000, C434S356000, C434S358000, C434S359000, C434S363000
Reexamination Certificate
active
06879805
ABSTRACT:
A test form comprises a substrate, a chromogenic material applied to at least a top surface portion of the substrate, a removable opaque layer overlaying a portion of the chromogenic material, the chromogenic material being adapted to irreversibly generate a visible change in color to form a desired indicia, upon exposure of the area to an activating agent such as heat to predetermined areas on a bottom portion of the substrate, all without disturbing the opaque layer covering the indicia so produced. The present invention is further directed to a method and system for customizing a test form having a removable opaque layer, by permitting printing under the opaque layer to be concealed until the corresponding opaque layer covering the indicia is removed.
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Harris Chanda L.
Watov Kenneth
Watov & Kipnes P.C.
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