公开(公告)号：US20240326088A1

公开(公告)日：2024-10-03

申请号：US18610530

申请日：2024-03-20

Applicant: TOTO LTD.

Inventor： Atsushi KINJO ,  Nobutomo OTSUKA ,  Fumito TODA

IPC: B05D1/02

CPC classification number: B05D1/02 ,  B05D2490/50

Abstract: A structural member 10 includes a base material 100 and a protective film 200 covering a surface 110 of the base material 100. When, in a cross-section of the protective film 200 cut perpendicularly to the surface 110, a proportion of pores per unit area is defined as porosity, the porosity in a first portion 201 that is a portion of the cross-section is lower than the porosity in a second portion 202 that is a portion of the cross-section closer to the base material 100 side thereof than the first portion 201.