Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
EI

Eiichi Ishii — 24 Patents

Nec: 7 patents #2,009 of 14,502Top 15%
Toyota: 6 patents #4,861 of 26,838Top 20%
SESeiko Epson: 2 patents #4,555 of 7,774Top 60%
ACAisin Aw Co.: 2 patents #784 of 2,011Top 40%
YCYoshikawa Rf Systems Co.: 2 patents #4 of 10Top 40%
NCNippon Electric Co.: 2 patents #117 of 792Top 15%
Sony: 1 patents #17,321 of 25,231Top 70%
OPOsaka Prefecture: 1 patents #15 of 59Top 30%
NSNippon Steel: 1 patents #2,111 of 4,423Top 50%
NKNippon Valqua Kogyo Kabushiki Kaisha: 1 patents #1 of 14Top 8%
OCOki Electric Industry Co.: 1 patents #1,459 of 2,807Top 55%
TCTanaka Holdings Co.: 1 patents #11 of 18Top 65%
Abashiri, JP: #8 of 126 inventorsTop 7%
Overall (All Time): #168,038 of 4,157,543Top 5%
24 Patents All Time
Eiichi Ishii has been granted 24 US patents while listed as an inventor at Nec. The first was granted in 1980 and the most recent in July 2022. Eiichi Ishii ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list Eiichi Ishii in Abashiri, JP.

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11381932 Guidance information providing system, guidance information providing device, guidance information providing method, and program-stored non-transitory storage medium Michio Ikeda, Mitsugu Makita, Toru Yoshida, Gaku Itou 2022-07-05 $585,000
11153732 Apparatus for determining arrangement of mobile shop vehicles, method for determining arrangement, and computer-readable storage medium Michio Ikeda, Mitsugu Makita, Toru Yoshida, Gaku Itou 2021-10-19 $529,000
11067402 Information system, information processing method, and program Michio Ikeda, Mitsugu Makita, Toru Yoshida, Gaku Itou 2021-07-20 $732,000
10966054 Guidance information providing system, guidance information providing device, guidance information providing method, and program-stored non-transitory storage medium Michio Ikeda, Mitsugu Makita, Toru Yoshida, Gaku Itou 2021-03-30 $802,000
10059284 Vehicle-mounted device control system Kazuyoshi Obayashi, Masatoshi Takahara, Takashi Hayashi 2018-08-28
8044783 Tire condition detection system and induction feed method thereof Hok Huor Ou, Shiro Nagata 2011-10-25
7899588 Externally chargeable electric/hybrid vehicle Takaya Soma, Masatoshi Takahara 2011-03-01 $1,181,000
7291229 Method of surface treatment of titanium metal Takumi Sone, Yukihiro Sato, Kei Demizu, Hideo Kakutani, Koichi Tanaka +2 more 2007-11-06
7142163 Loop antenna device Takakazu Fukano, Yasuhiko Kosugi, Noboru Asauchi 2006-11-28
6938978 Container for printing fluid material Yasuhiko Kosugi, Noboru Asauchi, Takakazu Fukano, Toshihisa Saruta 2005-09-06
6522329 Image processing device and method for producing animated image data Yushi Ihara, Yuji Matsumoto, Chizuru Makita, Kohei Nojiri 2003-02-18 $441,000
6118367 Data carrier system 2000-09-12
5789991 FSK modulating and demodulating apparatus wherein each binary data is represented by same number of cycles of modulated signal 1998-08-04
5066876 Circuit for converting ECL level signals to MOS level signals Shinri Fukuda 1991-11-19 $26,000
5008673 Digital to analog converter enhancing conversion precision 1991-04-16 $34,000
4800338 Pulse count type FM demodulator Shigeo Yoshizawa 1989-01-24 $25,000
4788478 Speed control system for DC motor Masuo Osuga 1988-11-29 $62,000
4649327 Electric motor control circuit 1987-03-10 $947,000
4647870 Current mirror circuit with a large current ratio Takakazu Yoshioka 1987-03-03 $722,000
4616273 Tape recording apparatus provided with a bias control device Makoto Yoshimizu 1986-10-07 $905,000
4401885 Planar heat generating device Yoshiaki Mori, Minoru Toyoda 1983-08-30
4264867 Demodulator circuit for frequency-modulated signal 1981-04-28 $27,000
4219778 Signal processing circuit for an FM signal receiver 1980-08-26 $10,000
4202917 Method for manufacture of indium oxide (III) film Masanori Nakane, Hiroshi Ishikawa, Itsuki Uehara, Yoshizo Miyake 1980-05-13