US Patent Issued to Kyowa Pharma Chemical on Sept. 1 for "Method for producing trisulfide compound or selenotrisulfide compound" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,021, issued on Sept. 1, was assigned to Kyowa Pharma Chemical Co. Ltd. (Takaoka, Japan).

"Method for producing trisulfide compound or selenotrisulfide compound" was invented by Shoichiro Tomonaga (Takaoka, Japan) and Ikumi Shimokawa (Takaoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for producing a trisulfide compound or a selenotrisulfide compound. This production method includes: a step for oxidizing a disulfide compound with an oxidizing agent to obtain a sulfoxide compound; and a step for reacting the sulfoxide compound that has been obtained with a source of sulfur or a source of selenium to obtain a trisulfide...