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:
Mar. 20, 2001
Filed:
Jun. 13, 1997
Peter Michael Baumgart, San Jose, CA (US);
Thomas Allen Gregory, Campbell, CA (US);
Ulla Vasant Nayak, San Jose, CA (US);
Thao Anh Nguyen, Malibu, CA (US);
Michael Luis Ramirez, San Jose, CA (US);
Andrew Ching Tam, Saratoga, CA (US);
Run-Han Wang, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A disk drive having a disk with a contact start/stop (CSS) region on which a slider can rest is described. The CSS region is divided into at least three zones with the inner and outer zones having a surface topography which is different from the surface topography of the middle zone. The middle zone of the CSS region may be textured with bumps having a lower average height, a lower average density and/or a different bump diameter. The middle zone may also be left untextured. The slider is maintained over the CSS region during spin up and/or spin down.