Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
SK

Sakae Kitajo

Nec: 27 patents #306 of 14,502Top 3%
JCJapan E M Co.: 3 patents #2 of 18Top 15%
SKShowa Denko K.K.: 3 patents #463 of 1,736Top 30%
NSNec Toppan Circuit Solutions: 2 patents #3 of 27Top 15%
NDNitto Denko: 2 patents #1,207 of 2,479Top 50%
Overall (All Time): #132,274 of 4,157,543Top 4%
29 Patents All Time

Issued Patents All Time

Showing 26–29 of 29 patents

Patent #TitleCo-InventorsDate
6430327 Optical module and manufacturing method thereof Yoshinobu Kaneyama, Masataka Ito, Masahiko Fujiwara, Mikio Oda, Yuzo Shimada 2002-08-06
6238086 Method of calculating thermal resistance in semiconductor package accommodating semiconductor chip within a case which can be applied to calculation for semiconductor package with radiation fins Kazuyuki Mikubo 2001-05-29
5838066 Miniaturized cooling fan type heatsink for a semiconductior device 1998-11-17
5241452 Package with heat sink 1993-08-31