US Patent Issued to Kyowa Pharma Chemical on Feb. 17 for "Trisulfide compound and clathrate thereof" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,764, issued on Feb. 17, was assigned to Kyowa Pharma Chemical Co. Ltd. (Takaoka, Japan).

"Trisulfide compound and clathrate thereof" was invented by Shoichiro Tomonaga (Takaoka, Japan), Takahiro Isobe (Takaoka, Japan) and Etsuo Ohshima (Takaoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound represented by Formula (1) or (3).wherein R1 and R2 are each independently a hydrogen atom; a C1-6 alkyl group optionally having one or more substituents selected from the group consisting of a carboxy group and -OR5; a C2-6 alkyl group having one or more substituents selected from the group consisting of -NR6R7 and -N+R9R10R11; or -(CH2CH2O)nR8...