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. 29, 2015
Filed:
Aug. 12, 2013
Fuji Manufacturing Co., Ltd., Tokyo, JP;
Keiji Mase, Tokyo, JP;
Masato Hinata, Tokyo, JP;
FUJI MANUFACTURING CO., LTD., Tokyo, JP;
Abstract
To provide a scribing method by blasting that allows forming a groove at high accuracy without masking, a blasting machine that includes an ejection nozzle having a slit-shaped ejection opening with a width of 10 to 500 μm and a length of 5 to 5000 times the width, and an abrasive with a median diameter equal to or less than one-half of a width of the ejection opening of the ejection nozzle and with a maximum particle diameter smaller than a width of the ejection opening are used; and the abrasive is ejected together with compressed gas on a surface of a workpiece at an ejection distance of 0.1 to 3.0 mm and an ejection pressure of 0.2 MPa to 0.6 MPa without masking so that 0.25 cmor less of the abrasive is included per 1000 cmof the compressed gas discharged from the ejection nozzle.