ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,474, issued on Feb. 18, was assigned to AISAN KOGYO K.K. (Obu, Japan).
"Leakage detector" was invented by Yuya Tanida (Obu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A leakage detector for a fuel vapor processing system having a canister. The leakage detector includes a sealing system and a control unit. The sealing system is connected to the canister and is configured to sealingly close an inspection area, which includes the canister. The control unit is implemented by at least one programmed processor. The control unit is configured to calculate an amount of fuel vapor in the canister. The control unit is also configured to select a lea...