38 Utility Patents
#989 in Yokohama
#13,157 in Japan
#62,563 in the World
Forward Citations = 437
Company Filing History:



4. 2 out of 39,212

5. 1 out of 5
Koei Co., Ltd.
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#989 in Yokohama
#13,157 in Japan
#62,563 in the World
Company Filing History:




Get your Inventor Badge Today