This inventor holds 21 USPTO granted patents and 4 published patent applications and 1 EPO patent, primarily in Insulated Electrical Wires. Top assignees: Sumitomo Electric Industries, Limited, Sumitomo Electric Wintec, Inc., Matsushita Electric Industrial Co., Ltd.. Active years: 1980-2025.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Takatsuki, JP (2007)
- Koka, JP (2016 - 2020)
- Osaka, JP (1980 - 2024)
Company Filing History:



Years Active: 1980-2025
Areas of Expertise:
Title: Masaaki Yamauchi: Innovator from Osaka, Japan
Introduction: Masaaki Yamauchi is a distinguished inventor based in Osaka, Japan, with a remarkable portfolio of 20 patents to his name. His innovative contributions primarily focus on materials and electrical engineering, demonstrating significant advancements in the field.
Latest Patents: Among Masaaki's latest patents are an insulated wire and a substrate for high-frequency printed wiring boards. The insulated wire patent describes an insulated wire comprising a linear conductor coated with an insulating layer. This insulating layer incorporates two types of solvents with varying relative permittivities, specifically designed to enhance performance under heating conditions. His substrate for high-frequency printed wiring boards features a combination of a dielectric layer made of fluororesin and inorganic fillers, along with a highly refined copper foil. This structure is engineered to optimize electrical conductivity and material integrity.
Career Highlights: Masaaki has built a solid career with significant roles in reputable companies, including Sumitomo Electric Industries and Matsushita Electric Industrial Co., Ltd. His work has consistently focused on innovative engineering solutions, pushing the boundaries of technology in his field.
Collaborations: Throughout his career, Masaaki has collaborated with notable professionals such as Koji Akiyama and Takashi Aoki. These partnerships have strengthened his research endeavors and facilitated the continuous evolution of his innovative projects.
Conclusion: Masaaki Yamauchi's dedication to innovation and his impressive patent portfolio affirm his status as a leading figure in the engineering and materials science sectors. His contributions continue to influence the development of advanced technologies, making a lasting impact in his field of expertise.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile