Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Norio Akamatsu — 14 Patents

UNUnknown: 5 patents #3,065 of 83,584Top 4%
JUJustsystems: 2 patents #7 of 44Top 20%
AEAlpine Electronics: 1 patents #279 of 637Top 45%
Sharp Kabushiki Kaisha: 1 patents #6,861 of 10,731Top 65%
UTUniversity Of Tokushima: 1 patents #12 of 80Top 15%
KWKabushikikaisha Wacom: 1 patents #5 of 11Top 50%
ACAoi Electronics Co.: 1 patents #21 of 47Top 45%
Tokushima, JP: #115 of 1,059 inventorsTop 15%
Overall (All Time): #353,724 of 4,157,543Top 9%
14 Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
8232583 Field effect power generation device 2012-07-31
7890323 Digital filtering method, digital filtering equipment, digital filtering program, and recording medium and recorded device which are readable on computer 2011-02-15
6721429 Electro-magnetic microphone Kaoru Tada 2004-04-13
6713668 Solar energy converter and solar energy conversion system 2004-03-30
6653547 Solar energy converter 2003-11-25
5982907 Audio signal waveform emphasis processing device and method JUN-ICHI KAKUMOTO 1999-11-09
5949293 Integrated circuit for measuring the distance Hideshi Kanaoka 1999-09-07
5371835 Inductively coupled neural network Azuma Murakami, Ryuichi Yamane, Yasuhiro Fukuzaki, Sadao Yamamoto 1994-12-06
5258938 Interpolating method using bit-shift and addition/subtraction operations 1993-11-02
5259039 Method of separating specific patterns from pattern space and apparatus therefor 1993-11-02
5257355 Method and apparatus for generating non-linearly interpolated data in a data stream 1993-10-26
4967105 Load current control-type logic circuit Toshiya Tsukao 1990-10-30
4550735 Electrode for an electrocardiograph Yasuhiro Toyosu 1985-11-05
4517983 Electrode sets with resiliently mounted pin electrodes Yasuhiro Toyosu 1985-05-21