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:
Jun. 26, 2007
Filed:
Jan. 10, 2003
Applicants:
Gunter Heine, Aptos, CA (US);
Klaus Dieter Kloeppel, Watsonville, CA (US);
Dustin Alan Cochran, Watsonville, CA (US);
Inventors:
Gunter Heine, Aptos, CA (US);
Klaus Dieter Kloeppel, Watsonville, CA (US);
Dustin Alan Cochran, Watsonville, CA (US);
Assignee:
Seagate Technology. LLC, Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H 3/00 (2006.01); B23H 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of forming a hydrodynamic bearing surface on a workpiece is provided. The method comprises electrochemically etching away all material in a region of the surface, except for portions of the region defined by a land pattern on an etching cathode. The step of removing forms a continuous recessed region comprising grooves formed between the portions of the region defined by the land pattern, and a relief cut region circumscribing the workpiece.