Company Filing History:
6 out of 306 
4 out of 8,780 
2 out of 3,593 
Years Active: 2010-2013
Title: **Yoshimasa Amatatsu: Innovator in Semiconductor Technology**
Introduction
Yoshimasa Amatatsu, an accomplished inventor based in Gunma, Japan, has made significant contributions to the semiconductor industry. With a total of six patents to his name, he has developed innovative solutions that address common challenges in semiconductor device manufacturing.
Latest Patents
Amatatsu's recent patents highlight his expertise in semiconductor device fabrication. One notable patent focuses on a semiconductor device and method of manufacturing the same. This invention introduces isolation regions within the substrate and epitaxial layer, dividing them into multiple element formation regions. By connecting first and second P-type buried diffusion layers with a P-type diffusion layer, the design reduces the lateral diffusion width of the first P-type buried diffusion layer, thereby minimizing the isolation region's size.
Another significant patent addresses the issue of connection resistance in semiconductor devices. Traditional devices often face challenges due to oxide films forming between wiring layers. Amatatsu's innovative design embeds a first metal layer in openings that connect first and second wiring layers, forming a connection that allows for a reduced connection resistance value. This structure enhances the performance of the semiconductor device by resolving common electrical resistance issues.
Career Highlights
Throughout his career, Amatatsu has been associated with notable companies in the semiconductor field. He worked at Sanyo Semiconductor Co., Ltd. and Sanyo Electric Co., Ltd., where he honed his skills and contributed to advancing semiconductor technologies.
Collaborations
Yoshimasa Amatatsu has collaborated with talented professionals in the industry, including Mitsuru Soma and Hirotsugu Hata. These partnerships have enriched his work and led to innovative breakthroughs in semiconductor manufacturing processes.
Conclusion
Yoshimasa Amatatsu's contributions to semiconductor technology underscore his role as a forward-thinking inventor. His patents reflect a deep understanding of the complexities involved in semiconductor device manufacturing and demonstrate a commitment to reducing resistance and enhancing efficiency within the field. As technology continues to advance, Amatatsu's inventions will likely play a crucial role in shaping the future of semiconductors.