Location History:
- Urawa, JP (1992)
- Saitama-ken, JP (1996)
- Saitama, JP (2008)
- Naka-gun, JP (2011 - 2013)
- Kuki, JP (2013 - 2016)
- Naka, JP (2019)
Company Filing History:
4 out of 1,530 
3 out of 50 
2 out of 13,411 
Years Active: 1992-2019
Title: Muneaki Watanabe: Innovator in Sputtering Technology
Introduction
Muneaki Watanabe is a notable inventor based in Naka-gun, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced sputtering targets and electromagnetic components. With a total of nine patents to his name, Watanabe's work has had a considerable impact on various technological applications.
Latest Patents
Watanabe's latest patents include a sputtering target and a method for producing the same. This innovation features a sputtering target composed of a Cu—Ga sintered compact that has a reduced oxygen content, which helps suppress abnormal discharges. The composition contains a Ga content of 20 at % or higher and less than 30 at %, with the balance being Cu and inevitable impurities. The oxygen content is limited to 100 ppm or lower, and the average grain size is 100 μm or less. The target exhibits diffraction peaks assigned to the γ and δ phases of CuGa, with the main peak intensity of the δ phase being 10% or higher relative to that of the γ phase.
Another significant patent involves iron powder coated with a magnesium-containing oxide film. This oxide-coated iron powder is designed for producing various electromagnetic circuit components that require high resistivity. The coating consists of a Mg—Fe—O ternary-based deposition film, which includes a crystalline MgO-dissolving wustite. The outermost surface of the powder is primarily composed of MgO, and the material features a fine crystalline texture with a grain size of 200 nm or less.
Career Highlights
Throughout his career, Muneaki Watanabe has worked with prominent companies such as Mitsubishi Materials Corporation and Diamet Corporation. His experience in these organizations has allowed him to refine his expertise in materials science and innovation.
Collaborations
Watanabe has collaborated with notable colleagues, including Ryoji Nakayama and Koichiro Morimoto. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.
Conclusion
Muneaki Watanabe is a distinguished inventor whose work in sputtering technology and electromagnetic components has made a lasting impact on the field. His innovative patents and collaborations reflect his commitment to advancing materials science.