Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Reexamination Certificate
2005-12-20
2005-12-20
McDonald, Rodney G. (Department: 1753)
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
C204S192200, C427S129000, C427S131000, C427S132000
Reexamination Certificate
active
06977030
ABSTRACT:
A method of manufacture of thin film magnetic disks and other useful articles of similar planar geometry in which a non-magnetic layer is first deposited on one or both sides of the disk or article substrate to mask chemical and mechanically induced heterogeneities introduced by pre-polishing to achieve a smooth finish, typically resulting in cold-working of the surface, and to also bind to the substrate and is then coated with a thin layer of metal selected to either reactively or catalytically initiate smooth, electroless deposition of a non-magnetic nickel alloy which is subsequently polished and coated with additional thin layers to provide magnetic read-write capability. A disk drive using one or more of such disks is provided.
REFERENCES:
patent: 4929499 (1990-05-01), Shadzi et al.
patent: 5221459 (1993-06-01), Okano et al.
patent: 5316844 (1994-05-01), Suzuki et al.
patent: 5388020 (1995-02-01), Nakamura et al.
patent: 5405646 (1995-04-01), Nanis
patent: 5466481 (1995-11-01), Nishikawa et al.
patent: 5569506 (1996-10-01), Jahnes et al.
patent: 5741560 (1998-04-01), Ross
patent: 5747135 (1998-05-01), Chakrabarti et al.
patent: 5871810 (1999-02-01), Starcke et al.
patent: 5900296 (1999-05-01), Hayashi et al.
patent: 5980997 (1999-11-01), Ross et al.
patent: 6030681 (2000-02-01), Czubarow et al.
patent: 6036824 (2000-03-01), Hedgcoth
patent: 6042939 (2000-03-01), Takahashi
patent: 6106927 (2000-08-01), Zhong et al.
patent: 6123603 (2000-09-01), Tada et al.
patent: 6143375 (2000-11-01), Ross et al.
patent: 6316097 (2001-11-01), Liu et al.
patent: WO 94/15720 (1994-07-01), None
Bhushan, Bharat, “Solid Surface Characterization,” Introduction to Tribology, Chapter 2, Copyright 2002, John Wiley & Sons, 9-11.
Samuels, L.E., “Principles of Technique Selection in Mechanical Polishing,” Metals Handbook, vol. 8, 8th Edition, Copyright 1973, American Society for Metals, 14-26.
Gawrilov, G.G., “Chemical (Electroless) Nickel Plating,” 1979, Porcullis Press, 118-119.
Final Office Action mailed Jun. 16, 2005 for U.S. Appl. No. 10/427,158, 9 pages.
Interview Summary mailed Jul. 13, 2005, 4 pages.
Amendment/Response Under 37 C.F.R. 1.132 with Exhibits A-G, Jul. 25, 2005, 41 pages, Filed in child 10/427,158, Reviewed from 10/427,158.
Haynes Mark A.
Haynes Beffel & Wolfeld LLP
McDonald Rodney G.
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