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:
May. 26, 2009
Filed:
Mar. 18, 2005
Ronald Dunham, San Jose, CA (US);
Wolfgang Goubau, Santa Cruz, CA (US);
Bhargav Patel, Newark, CA (US);
Marvin Wong, Danville, CA (US);
John Jaekoyun Yang, Newark, CA (US);
Ronald Dunham, San Jose, CA (US);
Wolfgang Goubau, Santa Cruz, CA (US);
Bhargav Patel, Newark, CA (US);
Marvin Wong, Danville, CA (US);
John Jaekoyun Yang, Newark, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A method for work hardening gold contact pads is disclosed. The method includes providing gold contact pads, providing lapping pads, and placing the lapping pads in contact with the gold contact pads to create a contact interface. A liquid medium is then applied to the contact interface while moving the lapping pads relative to the gold contact pads. The liquid medium is preferably a particulate-free pH neutral liquid, which makes water a good choice. Also disclosed is a gold pad having a work hardened surface.