Insurance & Reinsurance Insurance Litigation International Arbitration Litigation Class Actions Manufacturing & Distribution Privacy & Data Protection Technology Technology Litigation
Israil M. Sukonnik - Sidney OH John S. Judge - Sidney OH Colin H. Kilgore - New Kensington PA
Assignee:
Aluminum Company of America - Pittsburgh PA
International Classification:
B21D 2826 B21K 176
US Classification:
72329
Abstract:
A flat, smooth material, e. g. , metal sheet, suitable for use as a disc substrate for applying a recording media thereto for data storage devices, and a method of making same, are disclosed. The flat and smooth substrate is formed by applying sufficient pressure to opposite surfaces of the material to achieve the desired flatness and smoothness prior to finishing. Subsequent finishing may be used to remove any zone of roughness which may be present in the surfaces of the disc resulting from the pressing step. In one embodiment, the pressure step may be applied before finishing the disc perimeters.
Pierce Elementary School Ridgecrest CA 1970-1974, Viewig Elementary School China Lake CA 1974-1976, Murray Junior High School China Lake CA 1976-1977, China Lake High School China Lake CA 1978-1982