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Synergistic Preservative Composition Containing Alkylene Glycol Ester

USPTO granted Patent US12605318B2 to Arch UK Biocides Ltd on April 21, 2026 for a synergistic preservative composition containing an alkylene glycol ester. The patent covers methods for increasing the efficacy of preservative agents and reducing the minimum amount needed for effective preservation in end-use formulations. The patent application (No. 17920493) was filed on April 22, 2021, with 32 claims covering CPC classifications in the A61K 8 and A61Q ranges for personal care and pharmaceutical formulations.