ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,693, issued on Aug. 19, was assigned to SUMITOMO RUBBER INDUSTRIES LTD. (Kobe, Japan).
"Hydrophilic substrate and method for preparing hydrophilic substrate" was invented by Yasuhisa Minagawa (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are hydrophilic substrates provided with a hydrophilic polymer layer having controlled surface uniformity and irregularities, and methods for preparing the hydrophilic substrates. Included are hydrophilic substrates including a substrate having a surface containing at least one group represented by -N(R1)2 or -N(R2)3+ wherein each R1 or R2 is the same or different and represents a hydrogen ato...