YT

Yasuhiko Takamatsu

Ricoh Company: 2 patents #5,693 of 9,818Top 60%
Overall (All Time): #2,039,912 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9196854 Organic EL lighting emitting device, method of manufacturing the same, and organic EL light source device 2015-11-24
4651164 Thermal print head Shuro Abe, Yoshiro Yabuki, Takayuki Yamaguchi, Masatoshi Ohta, Eiji Nakamura 1987-03-17