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:
Jul. 13, 1993
Filed:
May. 15, 1991
Applicant:
Inventor:
Kohei Toyama, Fukushima, JP;
Assignee:
Shin-Etsu Handotai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B28D / ; B28D / ;
U.S. Cl.
CPC ...
125 1301 ; 125 1302 ;
Abstract
An improved method of using an ID saw slicing machine for slicing a single crystal ingot in a direction normal to the axis of the ingot to obtain wafers. The feed of the single crystal ingot to the blade of the ID saw slicing machine is increased and decreased alternately in accordance with a predetermined control pattern.