ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,380, issued on April 22, was assigned to TPR Co. Ltd. (Tokyo).
"CRN coating film and sliding member" was invented by Syun Sugawara (Tokyo) and Takatsugu Iwashita (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention addresses the problem of providing a CrN coating film which has excellent peeling resistance such that peeling thereof starting at a crack is unlikely to occur even in a more severe lubrication environment. The problem is solved by a CrN coating film which has a preferred orientation of 200 as determined by XRD, and in which the X-ray diffraction intensity ratio of the (200) plane with respect to the (111) plane, (20...