Inventor
KITA TAKEHIDE
JP2 patents
Patents
2 patentsUS5291027AMar 1, 1994
Optical identification multiple diffraction grating mark member and card using the same
TOPPAN PRINTING CO LTD76 citations94
US5486933AJan 23, 1996
Monochromatic-light reproduction type hologram, and method and apparatus for its image reproduction
TOPPAN PRINTING CO LTD30 citations91