YS

Yasuhiro Sakai

NK Nittoh Kogaku K.K.: 1 patents #21 of 32Top 70%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #3,464,262 of 4,157,543Top 85%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6972903 Visual aid Hideo Hara, Kazunaga Shimizu, Fumiaki Koizumi 2005-12-06