Location History:
- Aichi-gun, JP (2012 - 2015)
- Toyota, JP (2017 - 2021)
- Nagakute, JP (2015 - 2023)
- Nisshin, JP (2023)
Company Filing History:
19 out of 19,697 
15 out of 36,499 
10 out of 70 
Years Active: 2012-2025
Title: Tatsuji Nagaoka: A Pioneer in Semiconductor Device Innovations
Introduction
Tatsuji Nagaoka, based in Nagakute, Japan, is a distinguished inventor known for his significant contributions to semiconductor device technology. With a solid portfolio of 27 patents, his innovative approaches have advanced the field, particularly in the realm of compound semiconductors.
Latest Patents
Among Nagaoka's noteworthy patents is a method for manufacturing semiconductor devices. This method entails preparing a substrate made of a compound semiconductor that includes a first element and a second element, which is bonded to the first and has a lower electronegativity. The process involves causing an electric current to flow through the substrate and subsequently dividing it along a designated cleavage plane. Another key patent focuses on a silicon carbide semiconductor device that features an electric field relaxation layer designed to mitigate electric field penetration between guard rings, thereby ensuring a device with adequate withstand voltage.
Career Highlights
Throughout his career, Tatsuji Nagaoka has worked with prominent companies in the automotive and technology sectors. Notable among these is Denso Corporation and Toyota Jidosha Kabushiki Kaisha, where he applied his expertise in semiconductor technology to develop innovative solutions that enhance performance and reliability.
Collaborations
Nagaoka has collaborated with several notable professionals in his field, including colleagues Hiroyuki Nishinaka and Masahiro Yoshimoto. Their collective efforts have propelled advancements in semiconductor device manufacturing and design, highlighting the importance of teamwork in the innovation process.
Conclusion
Tatsuji Nagaoka remains a pivotal figure in semiconductor device innovation, with a legacy marked by numerous patents that continue to influence the industry. His work not only reflects personal ingenuity but also the collaborative spirit present in technological advancements, paving the way for future innovations in semiconductor applications.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.