US Patent Issued to GCP Applied Technologies on Oct. 27 for "Water reducing admixture for stable air" (American, Japanese Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,251, issued on Oct. 27, was assigned to GCP Applied Technologies Inc. (Malvern, Pa.).

"Water reducing admixture for stable air" was invented by Elizabeth Burns (Windham, N.H.), Hideo Koyata (Atsugi, Japan) and Klaus-Alexander Rieder (Beverly, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides exemplary additive compositions and methods whereby hydratable cementitious compositions, such as concrete, can be modified using polycarboxylate type ether or ester cement dispersant polymers of a small size, in combination with at least one alkyl alkoxylate type surface active agent which typically hitherto is considered deter...