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For the Inventor, By the Inventor

Hachioji, Japan

Masanao Yamaoka

This inventor holds 107 USPTO granted patents and 12 published patent applications and 1 EPO patent, primarily in Information Processing (CPC class G06N7-005). Top assignees: Hitachi, Ltd., Renesas Electronics Corporation, Renesas Technology Corp.. Active years: 2003-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masanao Yamaoka. Retrieved from https://idiyas.com/inventor/masanao-yamaoka

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

Calculating rank
USPTO Granted Patents = 107 

% Patents Active = 64.5

 

Average Co-Inventor Count = 3.0

ph-index = 15

Forward Citations = 1,298(Granted Patents)

Forward Citations (Not Self Cited) = 1,206(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hachiouji, JP (2003 - 2006)
  • Kodaira, JP (2005 - 2013)
  • Jyosui, JP (2006 - 2015)
  • White Plains, NY (US) (2013 - 2019)
  • Hachioji, JP (2003 - 2020)
  • Tokyo, JP (2016 - 2023)

Company Filing History:

goldMedal40 out of 42,743 
 
Hitachi, Ltd.
 patents
silverMedal37 out of 7,659 
 
Renesas Electronics Corporation
 patents
bronzeMedal27 out of 3,781 
 
Renesas Technology Corp.
 patents
4. 4 out of 336 
 
Hitachi Ulsi Systems Co., Ltd.
 patents
5. 3 out of 27 
 
Renesas Northern Japan Semiconductor, Inc.
 patents
6. 3 out of 3 
 
Superh, Inc.
 patents
7. 2 out of 227 
 
Hitachi Vantara Corporation
 patents
8. 1 out of 37 
 
Inter-University Research Institute Corporation
 patents
9. 1 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 2003-2026

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Areas of Expertise:
Information Processing
Semiconductor Device
Low-Power Memory
Integrated Circuit
Data Generation
Optimization Method
SRAM Circuit
Control Method
Calculation System
Autopoietic System
Interaction Model
Majority Circuit
107 patents (USPTO):Explore Patents
1. 12743605 - Information processing system and information processing method (2026-09-22),
2. 12437221 - Information processing apparatus, arithmetic device, and information processing method (2025-10-07),
3. 12373514 - Optimization method, information processing apparatus, and system using the same (2025-07-29),
4. 11656787 - Calculation system, information processing device, and optimum solution search process method (2023-05-23),
5. 11443217 - Information processing apparatus and information processing method (2022-09-13),
6. 10896241 - Information processing device and control method therefor (2021-01-19),
7. 10839044 - Information processing apparatus that controls a semiconductor device that calculates an interaction model as an accelerator (2020-11-17),
8. 10795404 - Information processing acceleration control system (2020-10-06),
9. 10783184 - Data generation method and computer system (2020-09-22),
10. 10665280 - Information processing apparatus and semiconductor integrated circuit device (2020-05-26),
11. 10573376 - Lower-power semiconductor memory device (2020-02-25),
12. 10452721 - Autopoietic information processing system and method (2019-10-22),
13. 10446224 - Semiconductor SRAM circuit having a plurality of MOSFETS controlling ground potential (2019-10-15),
14. 10366745 - Semiconductor device and information processing device (2019-07-30),
15. 10304526 - Semiconductor integrated circuit device and system (2019-05-28),

Title: **Masanao Yamaoka: Innovator in Information Processing Technologies**

Introduction

Masanao Yamaoka, a prolific inventor based in Hachioji, Japan, has made significant contributions to the field of information processing. With an impressive portfolio of 104 patents, his innovative work continues to impact various technological advancements.

Latest Patents

Among his latest patents, Yamaoka has developed a calculation system designed for mixed integer quadratic programming problems. This system integrates a variable memory that stores the state of a variable and utilizes a state transition calculation block alongside nonlinear and linear coefficient memories. The next state determination block efficiently calculates the next variable state, showcasing the complex yet efficient design of this system.

Additionally, Yamaoka has created an information processing apparatus capable of performing stochastic processes using a metropolis algorithm while minimizing the physical quantity of a circuit. This apparatus incorporates multiple array circuits, improving operational efficiency through innovative memory and logic circuit designs. Such advancements highlight Yamaoka's dedication to refining information processing methods.

Career Highlights

Masanao Yamaoka has held significant roles in notable companies, including Hitachi, Ltd. and Renesas Electronics Corporation. At these organizations, he has contributed to various projects that propelled advancements in technology, particularly in the realm of information processing.

Collaborations

Yamaoka has collaborated with esteemed colleagues such as Kenichi Osada and Koichiro Ishibashi. These partnerships have fostered an environment of innovation and creativity, leading to groundbreaking inventions and patents.

Conclusion

Masanao Yamaoka's contributions to information processing and innovation are noteworthy. His extensive patent portfolio and collaborations with industry professionals underscore his impact on the technological landscape. As he continues to innovate, his work will likely inspire future advancements in the field.

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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