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For the Inventor, By the Inventor

Hitachi, Japan

Ryokichi Yoshizawa

This inventor holds 4 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Process Computer Engineering, Inc.. Active years: 1996-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryokichi Yoshizawa. Retrieved from https://idiyas.com/inventor/ryokichi-yoshizawa

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

USPTO Granted Patents = 4

% Patents Active = 75.0

Average Co-Inventor Count = 5.1

ph-index = 4

Forward Citations = 53(Granted Patents)


Location History:

  • Hitachi, JP (1996)
  • Katsuta, JP (1998)
  • Hitachinaka, JP (2004 - 2005)

Company Filing History:

goldMedal4 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal1 out of 23 
 
Hitachi Process Computer Engineering, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1996-2005

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4 patents (USPTO):Explore Patents
1. 6892261 - Multiple operating system control method (2005-05-10),
2. 6715016 - Multiple operating system control method (2004-03-30),
3. 5787464 - Computer system including a dual memory configuration which supports (1998-07-28),
4. 5579508 - Main memory managing method and apparatus in which main memory is (1996-11-26),

Title: Ryokichi Yoshizawa: Innovator in Operating System Control

Introduction

Ryokichi Yoshizawa is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of operating system control, holding a total of four patents. His work focuses on enhancing the performance and reliability of systems through innovative software solutions.

Latest Patents

Yoshizawa's latest patents include a method for multiple operating system control. This inter-OS control software allows for the switching of operating systems executed on a single CPU. It enables multiple operating systems to be executed alternately, with a control program running exclusively on one OS to manage the controlled apparatus. Additionally, a supervisory control program and a development environment program operate on another OS, ensuring that the memory space is divided to prevent interference with the control program. This architecture establishes higher real-time performance and reliability.

Career Highlights

Throughout his career, Yoshizawa has worked with prominent companies such as Hitachi, Ltd. and Hitachi Process Computer Engineering, Inc. His experience in these organizations has contributed to his expertise in developing advanced control systems.

Collaborations

Yoshizawa has collaborated with notable colleagues, including Tomoaki Nakamura and Shigenori Kaneko. Their teamwork has likely fostered innovative ideas and solutions in their respective fields.

Conclusion

Ryokichi Yoshizawa's contributions to operating system control demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of technology and its applications, making him a significant figure in the industry.

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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