ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,632, issued on June 23, was assigned to TOSOH Corp. (Yamaguchi, Japan).
"Hydrocarbon adsorbent and method for adsorbing hydrocarbons" was invented by Toyohiro Usui (Yamaguchi, Japan) and Keita Nakao (Yamaguchi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydrocarbon adsorbent having a high hydrocarbon desorption start temperature and a method for adsorbing hydrocarbons that uses the hydrocarbon adsorbent are provided. The hydrocarbon adsorbent includes an alkali metal and a zeolite having a ring structure that includes at least 10 members is used. In the hydrocarbon adsorbent, a content of the alkali metal is 1 to 40 mass % based on a tot...