ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,370, issued on Aug. 4, was assigned to DUPONT SAFETY & CONSTRUCTION INC. (Wilmington, Del.).
"High dielectric constant neat polymeric film" was invented by Kathleen Opper (Greenville, Del.), Christopher Seay (Moseley, Va.), Kevin Kaurich (Richmond, Va.) and Jacob Pretko (Richmond, Va.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A polymeric film and process for making same, the film comprising residues of 5(6)-amino-2-(p-aminophenyl) benzimidazole, aromatic diamine, and aromatic diacid-chloride, in the form of polymer having a polymer chain including a salt of formula I, wherein C+ is a sodium, potassium, or calcium cation, the film having a thickn...