Company Filing History:
3 out of 39,244 
3 out of 1,075 
3 out of 12,890 
Years Active: 2007-2010
Title: Hisayuki Shimada: Innovator in Semiconductor Technology
Introduction
Hisayuki Shimada is a prominent inventor based in Aizuwakamatsu, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on improving the efficiency and performance of semiconductor memory devices.
Latest Patents
His latest patents include innovative designs for semiconductor memory devices. One notable patent describes a drain that features a lightly-doped shallow impurity region aligned with a control gate. This design also incorporates a heavily-doped deep impurity region aligned with a sidewall film, which is doped with impurities at a higher concentration than the lightly-doped region. The introduction of the lightly-doped shallow impurity region enhances the short-channel effect and programming efficiency. Additionally, a drain contact hole forming portion is provided to the heavily-doped impurity region to reduce contact resistance at the drain.
Career Highlights
Throughout his career, Hisayuki Shimada has worked with leading companies in the technology sector, including Fujitsu Corporation and Spansion LLC. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.
Collaborations
Hisayuki has collaborated with notable professionals in the field, including Hideki Komori and Yu Nan Sun. These collaborations have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Hisayuki Shimada's contributions to semiconductor technology demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of the complexities involved in semiconductor memory devices, paving the way for future advancements in the industry.