ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,616, issued on Aug. 19, was assigned to SIKA TECHNOLOGY AG (Baar, Switzerland).
"High water reduction powder preparation for dry mortar" was invented by Chao Yu (Suzhou, China), Jiali Zhu (Suzhou, China), Jianghong Liu (Suzhou, China) and Lin Chen (Suzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "PCE-type copolymers in powder form can be obtained by spry-drying and are easily re-dispersed in water. The fineness and the anti-caking properties of said PCE-type copolymers in powder form, as well as their water reduction potential and influence on slump life are improved. A production process of said PCE-type copolymers in powder form is by ...