Inventor
COUFAL HANS JUERGEN
US6 patents
Patents
6 patentsUS5883875AMar 16, 1999
Short coherent-length optical tomograph for high density volume optical data storage devices
IBM39 citations90
US6281993B1Aug 28, 2001
Phase shifting element for optical information processing storing systems
IBM67 citations89
US5650632AJul 22, 1997
Focal plane phase-shifting lithography
IBM15 citations79
US5827622AOct 27, 1998
Reflective lithographic mask
IBM11 citations70
US5717218AFeb 10, 1998
Focal plane phase-shifting lithography
IBM7 citations70
US7823173B2Oct 26, 2010
Removable disk media including holographic optical disk stacked in a tape cartridge shell
IBM0 citations41