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:
Apr. 26, 2005
Filed:
Nov. 19, 2002
Satoru Sato, Tokyo, JP;
Akihiro Sakamoto, Tokyo, JP;
Satoru Sato, Tokyo, JP;
Akihiro Sakamoto, Tokyo, JP;
Nihon Microcoating Co., Ltd., Tokyo, JP;
Abstract
A cleaning sheet has a base sheet, a first polishing layer formed on the base sheet, a porous foamed layer having air bubbles inside formed on the base sheet, and a second polishing layer formed on the foamed layer. The surface of the foamed layer may be flat or preferably porous with the second polishing layer having openings corresponding to those on the porous surface of the foamed layer. For cleaning a probe by using such a cleaning sheet, the tip of the probe is caused to penetrate the surface of the second polishing layer, to pass through the foamed layer and to be pressed against the first polishing layer.