Inventor
IWATA FUJIO
JP5 patents
Patents
5 patentsUS5301062AApr 5, 1994
Display having diffraction grating pattern
TOPPAN PRINTING CO LTD111 citations97
US5132812AJul 21, 1992
Method of manufacturing display having diffraction grating patterns
TOPPAN PRINTING CO LTD74 citations95
US5644565AJul 1, 1997
Optical recording medium including a plurality of diffracted grating cells
TOPPAN PRINTING CO LTD9 citations73
US5625619AApr 29, 1997
Optical recording medium having a plurality of different diffraction grating cells
TOPPAN PRINTING CO LTD11 citations73
US5570338AOct 29, 1996
Optical information recording medium which uses diffraction grating
TOPPAN PRINTING CO LTD3 citations62