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:
Jan. 31, 2023
Filed:
Feb. 18, 2021
Disco Corporation, Tokyo, JP;
Masaaki Nagashima, Tokyo, JP;
Naoto Takata, Tokyo, JP;
DISCO CORPORATION, Tokyo, JP;
Abstract
A method of grinding a surface of a workpiece that has surface irregularities includes a first grinding step of grinding the surface of the workpiece by a predetermined amount of stock removal while keeping a measuring element of a height gauge out of contact with the surface of the workpiece, thereafter, a height difference measuring step of bringing the measuring element of the height gauge into contact with the surface of the workpiece and measuring a height difference of surface irregularities on the surface of the workpiece with the height gauge, and a second grinding step of, if the measured height difference is larger than a preset range, grinding the surface of the workpiece while keeping the measuring element of the height gauge in contact with the surface of the workpiece until the measured height difference falls within the preset range.