ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,828, issued on March 3, was assigned to SEKISUI CHEMICAL Co. Ltd. (Osaka, Japan).
"Catalyst and method for producing diene compound" was invented by Haruka Nishiyama (Tsukuba, Japan) and Noritoshi Yagihashi (Tsukuba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A catalyst includes at least one element X selected from the group consisting of Groups 3 to 6 of the Periodic Table, and at least one element Z selected from the group consisting of Group 14 elements. At least one diffraction peak is observed in a low angle range of Theta=6deg or less in an X-ray diffraction profile observed using X-ray diffraction. The at least one diffraction peak ...