Company Filing History:
5 out of 15,928 
3 out of 21,351 
Years Active: 2005-2013
Title: Hirotaka Amasuga: Innovator in Semiconductor Technology
Introduction
Hirotaka Amasuga is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 8 patents. His work focuses on enhancing the performance and efficiency of semiconductor devices.
Latest Patents
Amasuga's latest patents include innovative designs for semiconductor devices and circuit substrates. One notable patent describes a semiconductor circuit substrate that comprises a transistor-forming substrate and a circuit-forming substrate. The transistor-forming substrate is a Gallium Nitride (GaN) substrate featuring a Bipolar Junction Transistor (BJT) on its top surface. This design allows for a flat bottom surface with contact regions, while the circuit-forming substrate, made from a non-compound semiconductor material, contains passive circuits and contact regions that are exposed at the top surface. Importantly, these two substrates are bonded directly without any insulating film.
Another significant patent involves a semiconductor device that includes a field effect transistor designed to reduce electric field concentration. This device features a semiconductor substrate with an impurity-doped region and an insulating region surrounding it. The design includes a gate electrode and multiple pads that facilitate connections, enhancing the overall functionality of the semiconductor device.
Career Highlights
Throughout his career, Hirotaka Amasuga has worked with leading companies in the industry, including Mitsubishi Electric Corporation and Mitsubishi Denki Kabushiki Kaisha. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.
Collaborations
Amasuga has collaborated with notable colleagues such as Tetsuo Kunii and Yoshitsugu Yamamoto. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Hirotaka Amasuga is a distinguished inventor whose work in semiconductor technology has led to numerous patents and innovations. His contributions continue to shape the future of the industry, making him a key figure in the field.