The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2021
Filed:
Mar. 30, 2017
Kao Corporation, Tokyo, JP;
KAO CORPORATION, Tokyo, JP;
Abstract
The present invention provides a fine hollow protruding tool () having a basal member () and a fine hollow protrusions () project from the basal member (). The fine hollow protrusions () each has an opening portion () on a tip side thereof and an interior in which an interior space linked to the opening portion () is formed. In any vertical cross-section passing through an apex of the fine hollow protrusion (), a wall thickness (T) in an apex-side region (TB) on the apex side is thinner than a wall thickness (T) in a lower-side region (BP) that is closer to the basal member () than the apex-side region (TB) is, and a gap (M) between inner walls () in the apex-side region (TB) is smaller than a gap (M) between the inner walls () in the lower-side region (BP). A base portion () of the fine hollow protrusion () projecting from the basal member () has a curvature. An entrance portion () to the fine hollow protrusion (), on a back face () of the basal member () opposite from a front face () from which the fine hollow protrusions () project, has a curvature.