This inventor holds 11 USPTO granted patents and 3 published patent applications. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Corporation. Active years: 1997-2020.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Itami, JP (1997)
- Hyogo, JP (1999)
- Tokyo, JP (1999 - 2020)
Company Filing History:
9 out of 21,351 
2 out of 16,602 
Years Active: 1997-2020
Title: Shigehisa Yamamoto: Innovator in Silicon Carbide Technology
Introduction
Shigehisa Yamamoto is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, particularly in silicon carbide (SiC) applications. With a total of 11 patents to his name, Yamamoto's work has advanced the development of high-performance semiconductor devices.
Latest Patents
Yamamoto's latest patents include innovations such as a silicon carbide epitaxial substrate and a silicon carbide semiconductor device. The epitaxial substrate features a single-crystal substrate of silicon carbide, with an epitaxial layer that consists of multiple layers, each designed to enhance performance. Notably, the first epitaxial layer has a basal-plane-dislocation conversion rate of less than 95%, while the second layer exceeds 98%. Additionally, he has developed a method for manufacturing silicon carbide semiconductor apparatus, which includes a testing step for identifying stacking faults in PN diodes efficiently. This method involves setting specific temperature and current density parameters to assess the forward resistance of bipolar semiconductor elements.
Career Highlights
Throughout his career, Shigehisa Yamamoto has worked with notable companies, including Mitsubishi Electric Corporation and Mitsubishi Denki Kabushiki Kaisha. His experience in these organizations has allowed him to refine his expertise in semiconductor technology and contribute to groundbreaking innovations.
Collaborations
Yamamoto has collaborated with esteemed colleagues such as Katsuya Shiga and Yasuhiro Kimura. These partnerships have fostered a collaborative environment that has led to the successful development of advanced semiconductor technologies.
Conclusion
Shigehisa Yamamoto's contributions to silicon carbide technology and semiconductor devices have positioned him as a key figure in the field. His innovative patents and collaborations reflect his commitment to advancing technology and improving semiconductor performance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile