KT

Katsuhiro Takushima

HO Hoya: 4 patents #305 of 1,290Top 25%
OC Oki Electric Industry Co.: 2 patents #947 of 2,807Top 35%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
Overall (All Time): #861,177 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
8535856 Lithographic mask and manufacturing method thereof Junji Mori 2013-09-17
8263294 Lithographic mask and manufacturing method thereof Junji Mori 2012-09-11
8067132 Photomask and exposure method Takashi Yasui 2011-11-29
7585418 Lithographic mask and manufacturing method thereof Junji Mori 2009-09-08
6800214 Method for correcting characteristics of attenuated phase-shift mask 2004-10-05
6508949 Method for correcting characteristics of attenuated phase-shift mask 2003-01-21