This inventor holds 2 USPTO granted patents. Top assignees: Tokyo Shibaura Denki Kabushiki Kaisha, Tokyo Denryoku Kabushiki Kaisha. Active years: 1980-1983.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 2,916 
1 out of 10 Years Active: 1980-1983
Title: Innovations of Yoichi Murakami - Pioneer in Electrical Engineering
Introduction
Yoichi Murakami, an innovative inventor based in Yokohama, Japan, has made significant strides in the field of electrical engineering. With a total of two patents to his name, Murakami's work focuses on enhancing safety and efficiency in electrical systems.
Latest Patents
Murakami's latest patents showcase his expertise and innovative mindset. The first patent is for a lightning arrester designed to protect electrical systems from voltage spikes. This arrester features at least two stacks of non-linear resistors connected in series, along with an arcing gap device that shunts one resistor stack when sparking occurs. The device is encased in a hermetically sealed housing filled with sulfur hexafluoride gas under a gauge pressure of no less than 2 kg/cm². The impedance of one resistor stack is approximately 15% to 35% of the total impedance when sparking, with a rated voltage of at least 50 kV.
The second patent involves a method and apparatus for detecting foreign matters in gas-sealed electrical apparatus. This innovative approach utilizes a tank at ground potential that contains insulating gas and high voltage live parts. By applying voltage to the live part, ultrasonic waves are generated and propagated through the tank, which are then sensed by a sensing element mounted on the tank.
Career Highlights
Throughout his career, Murakami has gained valuable experience by working for notable companies such as Tokyo Shibaura Electric Co., Ltd. and Tokyo Electric Power Company. His contributions to these organizations have undoubtedly advanced the technology and safety of electrical devices.
Collaborations
Murakami has also collaborated with notable colleagues, including Satoru Yanabu and Susumu Nishiwaki. These partnerships have fostered an environment of innovation and creative thinking within the industry.
Conclusion
In summary, Yoichi Murakami is a distinguished inventor whose contributions to the field of electrical engineering through his patents are noteworthy. His focus on safety and detection methods in electrical systems reflects a commitment to advancing technology and ensuring a safer environment for high-voltage applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile