ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,808, issued on March 25, was assigned to JUNKOSHA INC. (Ibaraki, Japan).
"Tube and pump using same" was invented by Kouichi Yanai (Ibaraki, Japan) and Yukihiko Hayashi (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tube is for use in a pump that transports a fluid by peristaltic movement and includes: a flow path that serves as a transport path of the fluid and extends in a first direction; and a body portion formed around the flow path, the body portion includes a first layer formed on the flow path and a second layer formed on the first layer, a flexural modulus of elasticity in a radial direction of the second layer is smaller ...