Inventor

SHIKAKUBO TSUTOMU

JP3 patents

Patents

3 patents

US5700550ADec 23, 1997

Transparent hologram seal

TOPPAN PRINTING CO LTD118 citations95

USRE38321ENov 18, 2003

Transparent hologram seal

TOPPAN PRINTING CO LTD17 citations90

US5891576AApr 6, 1999

Card

TOPPAN PRINTING CO LTD20 citations87