US Patent Issued to SICPA HOLDING on May 26 for "Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles" (Swiss Inventors)

ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,679, issued on May 26, was assigned to SICPA HOLDING SA (Prilly, Switzerland).

"Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles" was invented by Herve Pittet (Chatel-St-Denis, Switzerland), Thibaut Martini (Nyon, Switzerland), Patrick Veya (Aclens, Switzerland), Riccardo Ruggerone (Echallens, Switzerland) and Jean Garnier (Corcelles-le-Jorat, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the present inv...