This inventor holds 4 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1986-2005.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Hitachi, JP (1986 - 1995)
- Tokyo, JP (2003)
- Ibaraki, JP (2005)
Company Filing History:
Years Active: 1986-2005
Title: Kazuhiko Ishii: Innovator in Reactor Control Systems
Introduction
Kazuhiko Ishii is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of reactor control systems, holding a total of 4 patents. His work primarily focuses on enhancing the safety and efficiency of boiling water reactors.
Latest Patents
One of Kazuhiko Ishii's latest patents is a reactor manual control system designed for boiling water reactors. This innovative system controls each control rod hydraulically by driving a solenoid valve. The control system includes an operation control means with a duplicated data processing unit that generates sequence patterns based on the timing of the driving sequence, which is informed by manually provided control information. Additionally, it features a transmission control means that creates a command word for each control rod being controlled, allowing for mutual communication between duplicated data processing units. The system computes the AND logic of the data within a predetermined time difference, and when the computed results coincide, it transmits the selected command word serially. Furthermore, a transmission unit receives the command word, performs protocol conversion, and transmits it to multiple downstream transmission branch units as the control command. Lastly, a solenoid valve drive circuit drives the control rod drive unit corresponding to each rod branched from the transmission branch units.
Career Highlights
Kazuhiko Ishii has been associated with Hitachi, Ltd., where he has contributed to various projects related to reactor technology. His expertise in control systems has positioned him as a key figure in the development of advanced reactor technologies.
Collaborations
Throughout his career, Kazuhiko Ishii has collaborated with notable colleagues, including Shigeru Udono and Koji Masui. These collaborations have further enriched his work and contributed to the advancements in reactor control systems.
Conclusion
Kazuhiko Ishii's innovative contributions to reactor control systems demonstrate his commitment to enhancing safety and efficiency in nuclear technology. His patents reflect a deep understanding of complex systems and a dedication to advancing the field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile