公开(公告)号：US12042915B2

公开(公告)日：2024-07-23

申请号：US17847582

申请日：2022-06-23

Applicant: MAKITA CORPORATION

Inventor： Isao Miyashita ,  Hiroto Shimomae ,  Hideki Matsushima

IPC: C23C14/04 ,  B25C1/04 ,  C23C14/06 ,  C23C14/34

CPC classification number: B25C1/047 ,  C23C14/04 ,  C23C14/0641 ,  C23C14/34

Abstract: A base material is subjected to a low-temperature tempering treatment at a temperature equal to or less than 300° C. After the tempering treatment, a coating is applied to the base material by a sputtering method.