US Patent Issued to SICPA HOLDING on July 28 for "Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia" (Swiss Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,660, issued on July 28, was assigned to SICPA HOLDING SA (Prilly, Switzerland).

"Methods for producing optical effect layers comprising magnetic or magnetizable pigment particles and exhibiting one or more indicia" was invented by Herve Pittet (Chatel-St-Denis, Switzerland) and Patrick Veya (Aclens, 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 invention provides methods for producing optical effect layers (OELs) exhibiting one or more ind...