ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,533, issued on March 25, was assigned to DOW TORAY Co. LTD. (Tokyo).
"Silicone-based defoamer composition" was invented by Tsunehito Sugiura (Ichihara, Japan), Kazuhiko Kojima (Ichihara, Japan), Ikutaro Morikawa (Ichihara, Japan) and Takeshi Yoshizawa (Ichihara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a silicone anti-foaming agent composition that not only has superior anti-foaming speed but also in which anti-foaming performance is not reduced even when used repeatedly or over a long period. The composition comprises: a polyorganosiloxane polymer crosslinked product having a polyoxyalkylene group, which includes: moiety st...