Inventor

UMPHRESS RICHARD DONALD

US3 patents

Patents

3 patents

US5897931AApr 27, 1999

Magnetic disk with boron carbide overcoat layer

IBM10 citations69

US5750231AMay 12, 1998

Magnetic disk with boron carbide overcoat layer

IBM4 citations69

US6010601AJan 4, 2000

Method of making magnetic disk with boron carbide overcoat layer and adhesion layer

IBM3 citations58