Electrolysis: processes – compositions used therein – and methods – Electrolytic erosion of a workpiece for shape or surface...
Reexamination Certificate
2007-06-26
2007-06-26
Wyszomierski, George (Department: 1742)
Electrolysis: processes, compositions used therein, and methods
Electrolytic erosion of a workpiece for shape or surface...
Reexamination Certificate
active
10340423
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.
REFERENCES:
patent: 3984911 (1976-10-01), Krug et al.
patent: 4120544 (1978-10-01), Huber
patent: 4332428 (1982-06-01), Maruyama
patent: 5683183 (1997-11-01), Tanaka et al.
patent: 5700092 (1997-12-01), Wasson et al.
patent: 5793561 (1998-08-01), Ibaraki et al.
patent: 6251257 (2001-06-01), Cochran
patent: 6267869 (2001-07-01), MacLeod et al.
patent: 6358394 (2002-03-01), Cochran
patent: 6544403 (2003-04-01), Usui
patent: 2003/0006146 (2003-01-01), Lee et al.
patent: 1 068 921 (2001-01-01), None
patent: 2 319 741 (1998-06-01), None
patent: 2319741 (1998-06-01), None
patent: 2001-336532 (2001-12-01), None
International Search Report mailed on Oct. 9,2003 for PCT patent application no. PCT/US03/16989 filed May 28, 2003. 4 pages.
Cochran Dustin Alan
Heine Gunter
Kloeppel Klaus Dieter
Alexander Michael P.
Seagate Technology. LLC
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