Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Fujisawa, JP ranks #4,773 worldwide for total patents filed all time, with 567 patents from 16 inventors. Leading employers of inventors based in Fujisawa, JP include Nok, Ngk Spark Plug Co., Sandisk Technologies.

Showing 1–16 of 16 inventors

Rank Inventor Primary Company Patents
1 Shigeru Watanabe Nok 139
2 Masato Taniguchi Ngk Spark Plug Co. 79
3 Ken Oowada Sandisk Technologies 67
#4 Takao Yamazaki Nec 51
#5 Motoyasu Tsunoda Hitachi 44
#6 Hang Yu Applied Materials 35
#7 Katsuyuki Tsuji Showa Denko K.K. 21
#8 Shotaro Ohno Hitachi 19
#8 Kenji Tashiro Toyota 19
#10 Yasuyoshi Arikawa Takeda Pharmaceutical Company Limited 17
#10 Hideyuki Yamakawa Kabushiki Kaisha Toshiba 17
#10 Yoshihide Tomata Takeda Pharmaceutical Company Limited 17
#13 Masayuki Kumekawa Ebara 13
#14 Masao Miyamura Western Digital Technologies 10
#14 Naoyuki Akashi Isuzu Motors Limited 10
#16 Motoya SUZUKI Isuzu Motors Limited 9

Part of California