ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,164, issued on July 21, was assigned to TEKNOLOGIAN TUTKIMUSKESKUS VTT OY (Espoo, Finland).
"Roll-to-roll-imprinting" was invented by Olli-Heikki Huttunen (Oulu, Finland), Jussi Hiltunen (Oulu, Finland), Jarno Petaja (Oulu, Finland) and Johanna Hiitola-Keinanen (Oulu, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to roll-to-roll surface patterning by imprint method. A film of liquid phase resist is coated on a running web and subsequently brought into contact with a rolling replication tool with patterned features on its outer surface. In a simultaneous step, resist is 5 cured typically by heat or UV-light and ...