ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,369, issued on March 31, was assigned to THREEBOND Co. LTD. (Tokyo).
"Foaming apparatus and foaming method" was invented by Koichiro Endo (Hachioji, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to the present invention, there is provided a foaming apparatus that discharges a foamable material obtained by mixing gas into a viscous material of a resin and dispersing bubbles in a liquid of the viscous material. The foaming apparatus includes: a pipe; a material supply unit; a gas supply unit; a first gear pump; a second gear pump; a third gear pump; a mixer; a discharge unit; and a control unit."
The patent was filed on Dec. 3, 2021...