Location History:
- Saku, JP (2004 - 2011)
- Tokyo, JP (2006 - 2014)
Company Filing History:
9 out of 3,781 
4 out of 42,485 
1 out of 13,651 
Years Active: 2004-2014
Title: Hirokazu Nakajima: Innovator in Semiconductor Technology
Introduction
Hirokazu Nakajima is a prominent inventor based in Saku, Japan, known for his significant contributions to semiconductor technology. With a total of 16 patents to his name, Nakajima has made remarkable advancements in the field, particularly in the design and manufacturing of semiconductor devices.
Latest Patents
Among his latest patents is a groundbreaking semiconductor device and manufacturing method. This invention focuses on a semiconductor chip where LDMOSFET elements for power amplifier circuits are formed. The design includes a source bump electrode positioned on an LDMOSFET formation region, which consists of multiple source regions, drain regions, and gate electrodes. The source bump electrode is constructed on a source pad primarily made of aluminum, utilizing a thicker source conductor layer made mainly of copper. Notably, no resin film is placed between the source bump electrode and the source conductor layer. Another significant patent involves a solder composition for electronic devices, where junctions between a semiconductor device and a substrate are formed using metal balls of copper and compounds of tin. These metal balls are bonded together by the compounds, enhancing the reliability of electronic connections.
Career Highlights
Hirokazu Nakajima has had a distinguished career, working with leading companies in the semiconductor industry. He has been associated with Renesas Technology Corporation and Hitachi, Ltd., where he has contributed to various innovative projects and developments in semiconductor technology.
Collaborations
Throughout his career, Nakajima has collaborated with notable professionals in the field, including Tsuneo Endoh and Satoru Konishi. These collaborations have further enriched his work and have led to advancements in semiconductor innovations.
Conclusion
Hirokazu Nakajima's contributions to semiconductor technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence the development of advanced electronic devices, showcasing the importance of innovation in technology.
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.