This inventor holds 1 USPTO granted patent. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1976.
Company Filing History:
Years Active: 1976
Title: Innovations of Yoshihiko Watari in Semiconductor Technology
Introduction
Yoshihiko Watari is a notable inventor based in Itami, Japan. He has made significant contributions to the field of semiconductor technology. His innovative approaches have led to advancements in the production of semiconductor devices.
Latest Patents
Yoshihiko Watari holds a patent for a process of producing semiconductor devices. This process involves selectively implanting ions into a silicon substrate and heating it in an oxidizing atmosphere. An oxide film is formed on the substrate, with portions embedded in the substrate. The film is then etched to expose the substrate's surface, allowing for impurity diffusion to form base regions. The process is repeated to create windows for emitter diffusion and electrodes. Additionally, silicon is epitaxially grown on a silicon substrate that is selectively provided with SiO₂ films, resulting in single crystal growth on exposed surface portions while polycrystalline silicon grows on the SiO₂ films. This process is repeated to convert polycrystalline silicon to silicon dioxide, effectively separating the silicon regions.
Career Highlights
Yoshihiko Watari is associated with Mitsubishi Electric Corporation, where he has been instrumental in developing innovative semiconductor technologies. His work has contributed to the advancement of the industry and has had a lasting impact on semiconductor manufacturing processes.
Collaborations
Throughout his career, Yoshihiko Watari has collaborated with notable colleagues, including Koichi Kijima and Yoshihiko Hirose. These collaborations have fostered a creative environment that has led to significant technological advancements.
Conclusion
Yoshihiko Watari's contributions to semiconductor technology through his innovative patent and collaborations highlight his importance in the field. His work continues to influence the development of semiconductor devices, showcasing the impact of dedicated inventors in advancing technology.