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:
Feb. 27, 2001
Filed:
May. 27, 1999
Steven C. Rudy, San Jose, CA (US);
Curtis V. Macchioni, Livermore, CA (US);
Yong Shen, Tai Po, Nt, HK;
Billy W. Crue, Jr., San Jose, CA (US);
Michael T. Harnischfeger, Union City, CA (US);
Steven J. Plewes, San Jose, CA (US);
Read-Rite Corporation, Milpitas, CA (US);
Abstract
A lapping guide for use in fabrication of a device includes a first resistive element and a second resistive element. The two resistive elements can provide different changing resistances throughout the lapping of the device. These two resistances can be used throughout the lapping of the device to facilitate determination of when a predetermined desired height of the device has been achieved, and therefore stop the lapping of the device. The resistive elements can be physically adjacent to each other or separate from each other. Further, a common lead can be electrically connected to both resistive elements for measuring their respective resistances. In addition, the resistive elements can be separated from each other by the device.