US Patent Issued to SOCIETE BIC on July 28 for "Writing gel ink" (French Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,409, issued on July 28, was assigned to SOCIETE BIC (Clichy, France).

"Writing gel ink" was invented by Guillaume Caffier (Clichy, France) and Wing Yam Liu (Clichy, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to pens comprising a non-aqueous writing ink comprising a solvent, a coloring agent, a resin, a gelling agent, and a homo or copolymer of vinylpyrrolidone, wherein the gelling agent is a mixture of silica particles and of a fatty acid amide wax, and wherein the homo or copolymer of vinylpyrrolidone is present in amounts of between about 0.05 and about 0.6 wt.-%, relative to the total weight of the ink."...