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For the Inventor, By the Inventor

Hanno, Japan

Masaru Kokubo

This inventor holds 51 USPTO granted patents and 3 published patent applications and 1 EPO patent, primarily in Semiconductor Circuits (CPC class 3794). Top assignees: Hitachi, Ltd., Renesas Technology Corp., Hitachi Metals, Ltd.. Active years: 1987-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaru Kokubo. Retrieved from https://idiyas.com/inventor/masaru-kokubo

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

USPTO Granted Patents = 51 

% Patents Active = 64.7


Average Co-Inventor Count = 3.4

ph-index = 13

Forward Citations = 529(Granted Patents)

Forward Citations (Not Self Cited) = 499(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kokubunji, JP (1987 - 1989)
  • Fuchu, JP (1990 - 1992)
  • Hachiohji, JP (1994)
  • Hachiouji, JP (1994)
  • Hachioji, JP (1994 - 1995)
  • Hnno, JP (2001 - 2002)
  • Hannou, JP (1996 - 2004)
  • Foster, CA (US) (2008 - 2010)
  • Hanno, JP (1999 - 2014)
  • Tokyo, JP (2019 - 2023)

Company Filing History:

goldMedal25 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal16 out of 3,781 
 
Renesas Technology Corp.
 patents
bronzeMedal2 out of 2,333 
 
Hitachi Metals, Ltd.
 patents
4. 2 out of 7,654 
 
Renesas Electronics Corporation
 patents
5. 2 out of 76 
 
The Technology Partnership, Plc.
 patents
6. 1 out of 1,495 
 
Hitachi Astemo Ltd.
 patents
7. 1 out of 336 
 
Hitachi Ulsi Systems Co., Ltd.
 patents
8. 1 out of 1 
 
Ttp Communications Limited
 patent
9. 5 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1987-2025

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Areas of Expertise:
Semiconductor Integrated Circuit
Phase Locked Loop
Wireless Communication
Signal Processing
Digital To Analog Converter
Timing-Control Circuit
Pulse Generator
Frequency Synthesizer
Variable Frequency Oscillator
In-Vehicle Control
Pinching Sensor
Communication Cable Module
51 patents (USPTO):Explore Patents
1. 12333409 - Information processing device and learning recognition system (2025-06-17),
2. 11618462 - In-vehicle control system (2023-04-04),
3. 11054285 - Pinching sensor and detection device (2021-07-06),
4. 10690696 - Acceleration sensor (2020-06-23),
5. 10298426 - Communication cable module and transmission loss compensation circuit (2019-05-21),
6. 8755296 - Wireless network system and wireless communication device (2014-06-17),
7. 8179733 - Semiconductor integrated circuit device (2012-05-15),
8. 7936621 - Semiconductor integrated circuit device (2011-05-03),
9. 7808397 - Sensor with wireless communication function (2010-10-05),
10. 7737792 - Phase Locked loop circuit and semiconductor integrated circuit device using the same (2010-06-15),
11. 7664161 - Pulse generator and the transmitter with a pulse generator (2010-02-16),
12. 7602665 - Semiconductor integrated circuit device (2009-10-13),
13. 7522896 - Filter control method, signal processing circuit and integrated circuit for wireless receiver (2009-04-21),
14. 7504894 - Phase locked loop circuit and semiconductor integrated circuit device using the same (2009-03-17),
15. 7477676 - Spread spectrum clock generator and integrated circuit device using the spread spectrum clock generators (2009-01-13),

Title: The Innovative Mind of Masaru Kokubo: Pioneering In-Vehicle Technologies

Introduction:

Masaru Kokubo is a renowned inventor hailing from Hanno, Japan, with an impressive portfolio of 50 patents to his name. His groundbreaking work in in-vehicle control systems and pinching sensor technologies has revolutionized the automotive industry, making vehicles safer and more efficient.

Latest Patents:

One of Kokubo's recent patents is the cutting-edge in-vehicle control system, designed to minimize costs associated with fallback operations. This system comprises multiple control circuits with interconnected control units, an external environment recognition sensor, and a network of wirings. By integrating a first power supply unit and a detection unit, the system ensures seamless power distribution and anomaly detection for the external environment recognition sensor.

Kokubo's pinching sensor and detection device patent showcases his expertise in sensor technologies. The device features a sophisticated design with a dielectric layer, linear conductor layer, and conductor layers equipped with slits for enhanced detection capabilities. By utilizing high-frequency signals and detecting changes in reflection coefficients, this innovative sensor can precisely identify objects with remarkable sensitivity.

Career Highlights:

Throughout his illustrious career, Masaru Kokubo has made significant contributions to leading technology firms such as Hitachi, Ltd. and Renesas Technology Corp. His visionary approach to engineering and penchant for innovation have earned him recognition as a trailblazer in the field of automotive electronics.

Collaborations:

Kokubo has collaborated with esteemed colleagues like Yuichi Okuda and Yoshinobu Nakagome, who have played pivotal roles in the development and implementation of his groundbreaking inventions. Together, they have fostered a culture of creativity and excellence, driving forward the boundaries of technological advancements in the automotive sector.

Conclusion:

In conclusion, Masaru Kokubo stands out as a visionary inventor whose ingenuity and technical prowess have reshaped the landscape of in-vehicle technologies. His commitment to innovation and relentless pursuit of excellence continue to inspire generations of engineers and researchers worldwide, leaving an indelible mark on the realm of automotive electronics.

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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