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. 24, 2012
Filed:
May. 06, 2009
Tsuneo Torikoshi, Tokyo, JP;
Mitsunori Sugiyama, Tokyo, JP;
Tsuneo Torikoshi, Tokyo, JP;
Mitsunori Sugiyama, Tokyo, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A polishing method includes: a pre-polishing film thickness measurement step of taking a substrate before polishing out of a cassette and measuring a thickness of a polishing film of the substrate with a film thickness measurement device; the pre-polishing substrate withdrawal step of returning the substrate after the pre-polishing film thickness measurement to the cassette; the polishing step of taking the substrate, which has been returned to the cassette, out of the cassette and polishing the substrate; the cleaning/drying step of cleaning and drying the substrate after polishing; the post-polishing substrate withdrawal step of returning the substrate after cleaning/drying to the cassette; and the post-polishing film thickness measurement step of taking the substrate after cleaning/drying, which has been returned to the cassette, out of the cassette and measuring the thickness of the polishing film of the substrate with the film thickness measurement device.