Location History:
- Hitachi, JP (1982 - 1987)
- Takahagi, JP (1998)
Company Filing History:
4 out of 42,517 
4 out of 162 Years Active: 1982-1998
Title: Hitoshi Ishimaru: Innovator in Energy Systems
Introduction
Hitoshi Ishimaru is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of energy systems, particularly in the operation of combined plants and nuclear power systems. With a total of 4 patents, Ishimaru's work reflects his commitment to advancing technology in energy efficiency and safety.
Latest Patents
Ishimaru's latest patents include a method of operating a combined plant and a drain recovery system for the condensate feedwater system of nuclear power plants. The first patent describes an innovative operating method for a combined plant that utilizes multiple gas turbines and exhaust heat recovery boilers. This method allows for the efficient discharge of exhaust gas through a common chimney, enabling the gas turbines to be restarted or stopped without back-flow of exhaust gas under specific conditions. The second patent focuses on a drain recovery system designed to enhance the efficiency of the condensate feedwater system in nuclear power plants. This system includes a drain tank and pumps that work together to maintain optimal levels of drain water, ensuring reliable operation even during low load conditions or pump malfunctions.
Career Highlights
Throughout his career, Hitoshi Ishimaru has worked with prominent companies such as Hitachi, Ltd. and Hitachi Engineering Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in energy technology.
Collaborations
Ishimaru has collaborated with notable colleagues, including Toyohiko Masuda and Yoji Nagai. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and expertise in the field of energy systems.
Conclusion
Hitoshi Ishimaru's contributions to energy technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the efficiency and safety of energy systems, making him a key figure in the industry.