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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Weir; Richard S.
Address:
Agoura Hills, CA
No. of patents:
5
Patents:












Patent Number Title Of Patent Date Issued
5961792 Method for making titanium or titanium-alloy substrate for magnetic-recording media October 5, 1999
An improved magnetic-recording disk and a process for manufacturing magnetic-recording disks are disclosed. Precision cold-rolled titanium or titanium alloy is the substrate for a magnetic-recording disk. The surface of the substrate may be hardened by plasma nitriding, plasma carburizin
5855951 Method for making ceramic substrates for magnetic-recording media January 5, 1999
An improved magnetic-recording disk and a process for manufacturing magnetic-recording disks are disclosed. An electrically conductive hard coating is deposited upon a ceramic substrate. This coating can be one from the group including the nitrides, carbides, and borides of titanium,
5707705 Titanium or titanium-alloy substrate for magnetic-recording media January 13, 1998
An improved magnetic-recording disk and a process for manufacturing magnetic-recording disks are disclosed. Precision cold-rolled titanium or titanium alloy is the substrate for a magnetic-recording disk. The surface of the substrate may be hardened by plasma nitriding, plasma carburizin
5681635 Magnetic recording medium having a ceramic substrate, an underlayer having a dense fibrous zone October 28, 1997
An improved magnetic-recording disk and a process for manufacturing magnetic-recording disks are disclosed. An electrically conductive hard coating is deposited upon a ceramic substrate. This coating can be one from the group including the nitrides, carbides, and borides of titanium,
5536549 Austenitic stainless steel substrate for magnetic-recording media July 16, 1996
An improved magnetic-recording disk and a process for manufacturing magnetic-recording disks are disclosed. A precision cold-rolled austenitic stainless steel is the substrate for a magnetic-recording disk. The surface of the substrate may be hardened by plasma nitriding, plasma carb










 
 
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