Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Kasuga, JP ranks #5,059 worldwide for total patents filed all time, with 526 patents from 124 inventors. Leading employers of inventors based in Kasuga, JP include Semiconductor Energy Laboratory, Autonetworks Technologies, Panasonic.

Showing 1–50 of 124 inventors

Rank Inventor Primary Company Patents
1 Tetsuo Tsutsui Semiconductor Energy Laboratory 61
2 Makoto Mizoguchi Autonetworks Technologies 29
3 Takashi Haruguchi Panasonic 22
#4 Kazuro Nagashima Shoei Chemical 20
#5 Shigeru Fujino Empire Technology Development 13
#6 Koichi Eguchi Fujifilm 12
#7 Sumio Tate Sumitomo Electric Industries 11
#7 Kotaro Tsurusaki Tokyo Electron Limited 11
#7 Yutaka Miyazono Sumitomo Electric Industries 11
#7 Tomonori Kataoka Sumitomo Electric Industries 11
#7 Kunihiko Tokita Sumitomo Electric Industries 11
#12 Masayuki Shiwa Sumitomo Electric Industries 10
#13 Tatsuya Toyozumi Fujitsu Limited 9
#14 Seishi Tomari Sumitomo Electric Industries 8
#14 Tomohiro Etou Chisso 8
#14 Yusuke Sunada Kyushu University, National University 8
#14 Yasuhiko Isobe Fujitsu Limited 8
#14 Takayoshi Murahashi Hitachi Construction Machinery Co. 8
#19 Yoshiya Izumi New Oji Paper Co 7
#19 Yoshinobu Ishimoto Sumitomo Electric Industries 7
#19 Hisanari Kimura Fujitsu Limited 7
#19 Kanji Yahiro Sumitomo Electric Industries 7
#19 Kazunari Chikanawa Sumitomo Electric Industries 7
#19 Takashi KITADA Sumitomo Electric Industries 7
#19 Junichi Yoshitake Mitsui Petrochemical Industries 7
#26 Akitoshi Aritaka Sumitomo Electric Industries 6
#26 Yusuke Shiibara Sumitomo Electric Industries 6
#26 Sadaka Mitsuo Sumitomo Electric Industries 6
#26 Shinichiro Isobe Unknown 6
#26 Masao Hidaka Organo 6
#26 Tetsuya Araki Ando Electric Co. 6
#32 Shingo Sagata Sumitomo Electric Industries 5
#32 Naomi SHIRAI I-Pro Co. 5
#32 Kensei Otsubo Sumitomo Electric Industries 5
#32 Takehiko Yokomine Clear 5
#36 Takaharu Nakatsuka Makita 4
#36 Takeshi Tashima Murata Manufacturing Co. 4
#36 Tadashi Shimotoso Sumitomo Electric Industries 4
#36 Shinya Isumi Sumitomo Electric Industries 4
#36 Junichiro Hayashi Mitsubishi Electric 4
#36 Kazunori Omori Fujitsu Limited 4
#42 Masaaki Arita Sumitomo Electric Industries 3
#42 Tsugio Shibata Director-General Of Agency Of Industrial Science And Technology 3
#42 Kazufumi Takahashi Nec 3
#42 Seiichi Yoshinaga Panasonic 3
#42 Shinkichi Hatae Sansho Seiyaku Co. 3
#42 Haruichi Kanaya Kyushu University, National University 3
#42 Akihiro Matsubara Sumitomo Electric Industries 3
#42 Youichi Maehara Matushita Electric Industrial Co. 3
#42 Ikuhiro Yamamoto Sumitomo Electric Industries 3