ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,459, issued on Dec. 9, was assigned to SANDEN Corp. (Isesaki, Japan).

"Compressor" was invented by Misako Kaburagi (Isesaki, Japan) and Atsuo Teshima (Isesaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "To improve separation performance of oil. An oil separation structure includes a partition member configured to partition the inside of a separation chamber in the up-down direction. The partition member includes a cylindrical support portion supported by an inner circumferential surface of the separation chamber and a cylindrical swirl acceleration portion having an upper end side continuously formed from the support portion, having a small...