公开(公告)号：US10928781B2

公开(公告)日：2021-02-23

申请号：US16045886

申请日：2018-07-26

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Shouta Nagasawa ,  Junichi Sato

IPC: G04B37/22 ,  G04B37/00 ,  G04G17/08

Abstract: A case including a case body, and an exterior member which is arranged on an outer periphery of the case body in a manner to be deformable in a circumferential direction and which is provided with a separation section for separating at least a part of the case body in the circumferential direction.

公开(公告)号：US11578399B2

公开(公告)日：2023-02-14

申请号：US16457938

申请日：2019-06-29

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Junichi Sato ,  Kazuma Kobayashi ,  Shouta Nagasawa ,  Kenichi Inoue ,  Chinfu Liu ,  Wuchien Liu ,  Tienchai Lin ,  Weipin Kao

IPC: C23C8/10 ,  C22F1/02 ,  C22F1/18 ,  C22C14/00

Abstract: The present disclosure relates to a titanium or titanium alloy member and to a surface hardening method for the titanium or titanium alloy member. The titanium or titanium alloy member includes a base material of titanium or titanium alloy, and at a surface of the base material, a hardened layer formed by diffusion of oxygen into the surface. The method includes: a heating step of heating the titanium or titanium alloy base material of the member to a predetermined temperature under an inert gas atmosphere; a hardening step of introducing (i) a mixed gas including an inert gas, and (ii) oxygen gas as a hardening treatment gas, to perform hardening treatment of the surface of the base material; and a cooling step of cooling the base material down to room temperature under the inert gas atmosphere.