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:
Nov. 30, 1999
Filed:
Feb. 06, 1998
Shinya Yoshihara, Akita, JP;
Hiroshi Shindou, Akita, JP;
Yoshiaki Ito, Nagano, JP;
Masao Yamaguchi, Nagano, JP;
TDK Corporation, Tokyo, JP;
Abstract
In the case where an object to be ground is ground by mounting a horizontally elongated jig onto a grinding head and by bringing the object into contact with a grinding surface of a grinding disk being driven and rotated, the attitude of the grinding head is controlled by an adjust ring that is in surface contact with the grinding surface of the grinding disk while moving the grinding head, the horizontally elongated jig holding thereon the object that has a plurality of thin film magnetic heads arrayed thereon. Thereby, the flatness of the object is improved and variations in the throat heights of many magnetic heads formed on the object to be ground are reduced by allowing the attitude of the object to be controlled with a grinding surface of a grinding disk as a reference.