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:
Aug. 23, 2011
Filed:
Mar. 19, 2009
Michael Nojaba, Gustine, CA (US);
Pradeep K. Thayamballi, Fremont, CA (US);
James Tze-hwa Tung, Atherton, CA (US);
Julius A. Turangan, Livermore, CA (US);
Michael Nojaba, Gustine, CA (US);
Pradeep K. Thayamballi, Fremont, CA (US);
James Tze-Hwa Tung, Atherton, CA (US);
Julius A. Turangan, Livermore, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A tester system includes a tester and a radioactive isotope source. The tester includes a spindle assembly, a disk mounted to the spindle assembly, and a head actuatable over the disk. The radioactive isotope source is positioned in an ionizing location proximate the tester, such that a minimum distance between the radioactive isotope source and an axis of rotation of the disk is less than a radius of the disk.