Method for applying chemical watermarks on substrate

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United States of America Patent

PATENT NO 6334678
SERIAL NO

09388206

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Abstract

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A method and an apparatus for applying chemical watermarks to a substrate, e.g., paper, using a digital printer which prints ink in a dot matrix pattern. The ink may contain either a translucentizing agent or an opacifying agent. The printer is digitally controlled to print ink in accordance with a computer program corresponding to a desired pattern or image.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL PAPER COMPANY6400 POPLAR AVENUE MEMPHIS TN 38197

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Daigneault, Robert L Longmeadow, MA 2 23
Koenig, Michael F Goshen, NY 59 1083
Ondruska, Otto Erie, PA 2 17
Rogers, Daniel R Erie, PA 2 41
Yang, Jiyue Towaco, NJ 14 65

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