Company Filing History:
Years Active: 1990
Title: Moritada Marumo: Innovator in Power Cable Technology
Introduction
Moritada Marumo is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of electrical engineering, particularly in the area of power cable technology. With a total of 2 patents, Marumo's work focuses on diagnosing insulation deterioration and developing advanced semiconductor resin compositions.
Latest Patents
One of Marumo's latest patents is a method for diagnosing insulation deterioration of a power cable. This innovative technique involves measuring the charging current flowing from the power cable through a grounding conductor to the ground while a rated AC voltage is applied. By calculating the stray current and detecting the direct current component, Marumo's method allows for an accurate diagnosis of insulation deterioration based on the intrinsic direct current component.
Another significant patent is for a semiconductor resin composition. This composition includes a polymer component made from an ethylene-based copolymer, ethylene-propylene rubber, and low molecular weight polyethylene, combined with electroconductive carbon black. This innovative material enhances the performance and reliability of electrical components.
Career Highlights
Moritada Marumo is currently employed at Hitachi Cable, Inc., where he continues to develop cutting-edge technologies in the electrical engineering sector. His work has been instrumental in advancing the understanding and management of power cable insulation.
Collaborations
Throughout his career, Marumo has collaborated with esteemed colleagues such as Kenichiro Soma and Kazuo Kotani. These partnerships have fostered innovation and contributed to the successful development of his patented technologies.
Conclusion
Moritada Marumo's contributions to power cable technology and semiconductor materials demonstrate his commitment to innovation in electrical engineering. His patents reflect a deep understanding of the challenges in the field and provide solutions that enhance the reliability of electrical systems.