ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,885, issued on Jan. 20, was assigned to Shin-Etsu Chemical Co. Ltd. (Tokyo).
"Method for producing hydroxyalkyl alkyl cellulose" was invented by Akira Kitamura (Joetsu, Japan) and Mitsuo Narita (Joetsu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a method for producing a hydroxyalkyl alkyl cellulose having a high storage modulus (thermal gel strength) and a small number of undissolved fibers. More specifically, there is provided a method for producing a hydroxyalkyl alkyl cellulose including steps of: bringing sheet-shaped pulp having a pore volume of 0.55 ml/g or more and less than 1.00 ml/g or chip-shaped pulp obtained b...