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For the Inventor, By the Inventor

Tokyo, Japan

Tatsuo Nakagawa

This inventor holds 34 USPTO granted patents and 11 published patent applications and 2 EPO patents, primarily in Semiconductor Devices. Top assignees: Hitachi, Ltd., Nec Corporation, Renesas Electronics Corporation. Active years: 1995-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Nakagawa. Retrieved from https://idiyas.com/inventor/tatsuo-nakagawa

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 34 

% Patents Active = 70.6

 

Average Co-Inventor Count = 2.4

ph-index = 5

Forward Citations = 202(Granted Patents)


Location History:

  • Hachioji, JP (2010 - 2012)
  • Kokubunji, JP (2012 - 2014)
  • Kodaira, JP (2015)
  • Tokyo, JP (1995 - 2024)

Company Filing History:

goldMedal15 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal5 out of 36,718 
 
Nec Corporation
 patents
bronzeMedal5 out of 7,657 
 
Renesas Electronics Corporation
 patents
4. 4 out of 1,501 
 
Hitachi Astemo Ltd.
 patents
5. 2 out of 2,874 
 
Hitachi-High-Technologies Corporation
 patents
6. 1 out of 1,395 
 
Hitachi High-Tech Corporation
 patents
7. 1 out of 196 
 
Nec C Orporation
 patents
8. 1 out of 3,781 
 
Renesas Technology Corp.
 patents

Years Active: 1995-2025

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Areas of Expertise:
Measurement Cell
Digital PCR
Electronic Circuit
Sensor System
Semiconductor Device
Biological Sample Analyzer
Ultrasound Probe
Vital Signal Measurement
Power Supply Device
Traffic Shaping
ATM Switching
Biomolecule Analysis
34 patents (USPTO):Explore Patents
1. 12460163 - Measurement cell manufacturing method and measurement cell (2025-11-04),
2. 12203852 - Digital PCR measuring device (2025-01-21),
3. 12047062 - Electronic circuit and sensor system (2024-07-23),
4. 12018319 - Method and device for digital PCR measurement (2024-06-25),
5. 12013421 - Electronic circuit and sensor system (2024-06-18),
6. 11467016 - Semiconductor device and sensor system (2022-10-11),
7. 11271554 - Control circuit and sensor device (2022-03-08),
8. 11085913 - Biological sample analyzer (2021-08-10),
9. 10903735 - Semiconductor integrated circuit device and power supply device (2021-01-26),
10. 10856845 - Ultrasound probe and ultrasound diagnosis device using the same (2020-12-08),
11. 10613206 - Ultrasound probe and ultrasound imaging apparatus using the same (2020-04-07),
12. 10514386 - Sample liquid-surface position measurement device and sample liquid-surface position measurement method (2019-12-24),
13. 10389340 - Delay circuit, electronic circuit using delay circuit and ultrasonic imaging device (2019-08-20),
14. 9973074 - Semiconductor integrated circuit device (2018-05-15),
15. 9880082 - Detection device that calculates a center of gravity of a container gap region (2018-01-30),

Title: The Innovative Mind of Tatsuo Nakagawa

Introduction:

Tatsuo Nakagawa, a prolific inventor hailing from Tokyo, Japan, has made significant contributions to the world of semiconductor technology with an impressive portfolio of 29 patents.

Latest Patents:

Among his latest patents, is a groundbreaking "Semiconductor Device and Sensor System" designed to enhance noise resistance in semiconductor devices. Additionally, his "Control Circuit and Sensor Device" invention aims to prevent output fluctuations during power supply disconnections.

Career Highlights:

Nakagawa's expertise has been honed through his tenure at esteemed companies such as Hitachi Co., Ltd and NEC Corporation, where he has played a pivotal role in advancing cutting-edge technologies.

Collaborations:

Throughout his career, Nakagawa has collaborated closely with industry peers such as Masayuki Miyazaki and Ryosuke Fujiwara, fostering a culture of innovation and excellence in his professional endeavors.

Conclusion:

In conclusion, Tatsuo Nakagawa's remarkable journey as an inventor is marked by a relentless pursuit of excellence and a commitment to pushing the boundaries of technological innovation. His patents and collaborations stand as a testament to his invaluable contributions to the field of semiconductor technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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