Location History:
- Tokyo, JP (1999 - 2013)
- Chiyoda-ku, JP (2012 - 2014)
Company Filing History:
4 out of 15,906 
1 out of 15 
1 out of 21,351 
Years Active: 1999-2014
Title: Innovations by Noboru Hosokawa in Oil-Filled Electrical Devices
Introduction
Noboru Hosokawa, an accomplished inventor based in Chiyoda-ku, Japan, is renowned for his contributions to analyzing and diagnosing oil-filled electrical devices. With a portfolio of six patents, he has made significant strides in this field, enhancing the reliability and efficiency of electrical equipment.
Latest Patents
Among Hosokawa's latest innovations is an **Apparatus and Method for Analyzing the State of Oil-Filled Electrical Devices**. This apparatus simulates the condition of oil-filled electrical devices by immersing copper wire wrapped in insulating paper within insulating oil. It features two adjacent paper-covered copper wires, a tank to hold the wires and insulating oil, and a capacitance measurement unit that assesses the capacitance between the wires. This innovation aims to provide a precise analysis of the state of oil-filled electrical devices.
Another noteworthy patent is the **Diagnostic Method for Oil-Filled Electrical Device**, which takes into account temperature distribution within the device. This diagnostic method allows for accurate assessments, even when applied to devices in operation. It involves determining the point of abnormality based on surface resistivity measurements related to metal sulfide precipitation on the insulating paper.
Career Highlights
Noboru Hosokawa has held pivotal roles in esteemed companies such as Mitsubishi Electric Corporation and Mitsubishi Denki Kabushiki Kaisha, where he contributed to the advancement of electrical engineering practices. His work has been instrumental in developing diagnostics and monitoring technologies for oil-filled devices.
Collaborations
Throughout his career, Hosokawa has collaborated with notable professionals like Eiichi Nagao and Tsuyoshi Amimoto. Their combined expertise has driven innovation in the field, leading to improved methodologies for analyzing electrical devices.
Conclusion
In conclusion, Noboru Hosokawa's contributions to the field of electrical engineering, particularly regarding oil-filled electrical devices, have solidified his reputation as a leading inventor. His latest patents showcase his dedication to improving diagnostics and analysis methods, marking significant advancements that benefit various sectors reliant on electrical technologies. His work continues to inspire future innovations in the industry.