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For the Inventor, By the Inventor

Yokohama, Japan

Mari Matsumoto

This inventor holds 31 USPTO granted patents and 4 published patent applications and 1 EPO patent, primarily in Quantum Cryptography. Top assignee: Kabushiki Kaisha Toshiba. Active years: 2011-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mari Matsumoto. Retrieved from https://idiyas.com/inventor/mari-matsumoto

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

USPTO Granted Patents = 31 

% Patents Active = 58.1

 

Average Co-Inventor Count = 3.5

ph-index = 6

Forward Citations = 81(Granted Patents)


Location History:

  • Yokohama, JP (2011 - 2016)
  • Kanagawa, JP (2014 - 2017)
  • Kawasaki, JP (2017 - 2024)
  • Kawasaki Kanagawa, JP (2024)

Company Filing History:

goldMedal31 out of 53,250 
 
Kabushiki Kaisha Toshiba
 patents

Years Active: 2011-2025

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Areas of Expertise:
Quantum Cryptography
Secure Computing
Programmable Logic Circuit
Integrated Circuit
Nonvolatile Memory
Random Number Generation
Key Management
Arithmetic Device
Multi-context Configuration
Semiconductor Device
FPGA
Reconfigurable Circuit
31 patents (USPTO):Explore Patents
1. 12261947 - Learning system, learning method, and computer program product (2025-03-25),
2. 12003624 - Quantum cryptographic communication system, key management inspection device, key management inspection method, and computer program product (2024-06-04),
3. 11870893 - Secure computing method, secure computing system, and secure computing management device (2024-01-09),
4. 10175947 - Arithmetic device (2019-01-08),
5. 10127980 - Integrated circuit including memory, and write method (2018-11-13),
6. 9786382 - Semiconductor device and memory element (2017-10-10),
7. 9780030 - Integrated circuit (2017-10-03),
8. 9691498 - Semiconductor integrated circuit (2017-06-27),
9. 9691476 - Multi-context configuration memory (2017-06-27),
10. 9514839 - Nonvolatile memory, nonvolatile programmable logic switch including nonvolatile memory, and nonvolatile programmable logic circuit (2016-12-06),
11. 9438243 - Programmable logic circuit and nonvolatile FPGA (2016-09-06),
12. 9431104 - Reconfigurable circuit and method of programming the same (2016-08-30),
13. 9425801 - Programmable logic circuit and nonvolatile FPGA (2016-08-23),
14. 9276581 - Nonvolatile programmable logic switch (2016-03-01),
15. 9264044 - Programmable logic circuit and nonvolatile FPGA (2016-02-16),

Title: **Mari Matsumoto: Innovator in Quantum Cryptography**

Introduction

Mari Matsumoto is a prominent inventor based in Yokohama, Japan, recognized for her contributions to the field of quantum cryptography. With an impressive portfolio of 30 patents, she has made significant strides in developing advanced secure communication systems.

Latest Patents

Matsumoto’s latest patents demonstrate her innovative spirit and technical expertise. One of her key inventions is a **quantum cryptographic communication system** that includes a key-integrated-management device, quantum-cryptography devices, and key-management-inspection devices. This system features an inspection-target-value-calculating unit that evaluates the performance of quantum-cryptography devices, while an expected-value-calculating unit considers various factors such as wiring information and environmental conditions. Furthermore, her patent also encompasses methods for ensuring secure computing through a secure computing method, secure computing system, and secure computing management device, which involves generating fragment data for enhanced secure processing.

Career Highlights

Matsumoto’s career has been marked by her role at Kabushiki Kaisha Toshiba, a leading company in technology and innovation. Her work there not only reflects her commitment to advancing quantum technologies but also showcases her ability to collaborate effectively with other experts in the field.

Collaborations

Throughout her career, Mari Matsumoto has collaborated with notable colleagues, including Shinichi Yasuda and Kosuke Tatsumura. These partnerships have facilitated the sharing of ideas and resources, contributing to the successful development of groundbreaking technologies in quantum cryptography.

Conclusion

In summary, Mari Matsumoto is a pioneering inventor whose work in quantum cryptography is advancing the future of secure communication. Her extensive patent portfolio and collaborative efforts underscore her standing as a key figure in the realm of technological innovations, particularly within Kabushiki Kaisha Toshiba. Matsumoto's contributions will likely shape the landscape of this field for years to come.

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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