YU

Yasumasa Usui

MC Mycoal Co.: 3 patents #2 of 11Top 20%
📍 Tochigi, JP: #1,056 of 2,789 inventorsTop 40%
Overall (All Time): #1,525,701 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
D746480 Chemical body warmer 2015-12-29
D628705 Chemical body warmer Kenichi Iwamoto, Michio Aida, Yumiko Mine, Takashi Morito 2010-12-07
D628706 Chemical body warmer Kenichi Iwamoto, Michio Aida, Yumiko Mine, Takashi Morito 2010-12-07